An anti-seepage sealing component for LED driving power supply

Abstract

The present invention provides an anti-seepage sealing component for an LED driving power supply, specifically comprising: an elastomer having a plurality of stacked first accommodating cavities, the openings of two adjacent first accommodating cavities being opposite; a plurality of water-absorbing swelling bodies, each of which is arranged in a corresponding first accommodating cavity and can expand after absorbing water to apply a force to the first accommodating cavity where it is located, thereby increasing the sealing between the first accommodating cavity and the side wall of the shell. The present invention utilizes the water-absorbing swelling body to absorb water and expand, so that the first accommodating cavity and the shell fit more closely, improves the sealing, and prevents moisture from entering the shell. In addition, a plurality of water-absorbing swelling bodies are stacked, and when the upper water-absorbing swelling body and the first accommodating cavity play a sealing role, the lower water-absorbing swelling body and the first accommodating cavity maintain elastic properties. The elastomer can be adjusted within a certain range to prevent poor sealing effect due to manufacturing errors of the shell.

Description

Technical Field

[0001] The invention relates to the technical field of drive power supply housings, and in particular to an anti-seepage sealing component of an LED drive power supply. Background Art

[0002] LED driver power supply is a power converter that converts power supply into a specific voltage and current to drive the LED to emit light. Normally: the input of LED driver power supply includes high-voltage industrial frequency AC (i.e. mains), low-voltage DC, high-voltage DC, low-voltage high-frequency AC (such as the output of an electronic transformer), etc.

[0003] The housing cover assembly position of the LED driver power supply adopts the form of a sealing ring. However, due to the long sealing length and the large contact area with the outside air, the sealing ring is easily aged or plastically deformed, thereby losing its sealing effect. In addition, due to certain dimensional errors in the manufacture of the housing, the sealing effect will also be affected.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] Based on this, it is necessary to provide an anti-seepage sealing component of an LED driving power supply in response to the problems existing in the current anti-seepage sealing component of an LED driving power supply, wherein an elastomer and a plurality of water-absorbing swelling bodies are arranged in the gap of the shell, and the water-absorbing swelling bodies are utilized to absorb the moisture entering the gap of the shell, and expand after absorbing the moisture, so as to apply a force to the elastomer, so that the corresponding first accommodating cavity is deformed, thereby making the first accommodating cavity and the shell fit more closely, improving the sealing performance, and preventing moisture from entering the interior of the shell. In addition, a plurality of water-absorbing swelling bodies are stacked, and when the upper water-absorbing swelling body and the corresponding first accommodating cavity play a sealing role, the lower water-absorbing swelling body and the corresponding first accommodating cavity maintain elastic properties, preventing the lower water-absorbing swelling body and the corresponding first accommodating cavity from having a poor sealing effect during this period. The elastomer can be adjusted within a certain range to prevent poor sealing effect due to manufacturing errors of the shell.

[0006] The above purpose is achieved through the following technical solutions:

[0007] An anti-seepage sealing component of an LED driving power supply is installed in the gap of a shell of the LED driving power supply, and specifically comprises: an elastomer, which has a plurality of stacked first accommodating cavities, the openings of two adjacent first accommodating cavities are opposite, and the first accommodating cavities are in contact with the side wall of the shell; a plurality of water-absorbing and swelling bodies, each of which is arranged in a corresponding first accommodating cavity and can expand after absorbing water to apply a force to the first accommodating cavity, thereby increasing the sealing between the first accommodating cavity and the side wall of the shell.

[0008] Furthermore, the elastomer includes a transverse portion and a vertical portion that are spaced apart in sequence, the vertical portion and two adjacent transverse portions enclose the first accommodating cavity, and the transverse portion is inclined so that the length of the opening of the first accommodating cavity is smaller than the length of the vertical portion.

[0009] Furthermore, the transverse portion has a second accommodating cavity, which extends along the extension direction of the transverse portion, and its two ends extend into the adjacent vertical portion and extend a predetermined length along the vertical direction to form a bending portion, and a reinforcement is installed in the second accommodating cavity, and the elastic modulus of the reinforcement is greater than the elastic modulus of the elastomer.

[0010] Furthermore, the material of the elastomer is polyethylene, rubber, latex regenerated rubber or eucommia gum.

[0011] Furthermore, the reinforcement is an iron sheet, an aluminum alloy or a carbon steel sheet.

[0012] Furthermore, the material of the water-absorbing and swelling body is a highly absorbent resin, a natural hydrogel or a synthetic polymer-based hydrogel.

[0013] Furthermore, the shell includes a lower shell and an upper shell, the top of the lower shell has a first annular boss protruding upward, the bottom of the upper shell has a second annular boss protruding downward, and the second annular boss forms a gap with the first annular boss to install the elastomer and the water-absorbing expansion body.

[0014] Furthermore, the lower shell has a first mounting post, the upper shell has a mounting groove, and the first mounting post is inserted into the mounting groove.

[0015] Furthermore, the side wall of the lower shell has a first half hole, and the side wall of the upper shell has a second half hole.

[0016] Furthermore, the lower shell has a second mounting column to mount a circuit board of the LED driving power supply.

[0017] The beneficial effects of the present invention are:

[0018] (1) An elastic body and a plurality of water-absorbing and swelling bodies are arranged in the gap of the shell. The water-absorbing and swelling bodies absorb moisture entering the gap of the shell and swell after absorbing the moisture, so as to apply a force to the elastic body, so that the corresponding first accommodating cavity is deformed, thereby making the first accommodating cavity fit more closely with the shell, improving the sealing performance and preventing moisture from entering the shell.

[0019] (2) A plurality of water-absorbing expansion bodies are stacked and arranged. When the upper water-absorbing expansion body and the corresponding first accommodating cavity play a sealing role, the lower water-absorbing expansion body and the corresponding first accommodating cavity maintain elastic properties to prevent the sealing effect from deteriorating over time.

[0020] (3) The elastomer can be adjusted within a certain range to prevent poor sealing effect caused by shell manufacturing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of assembling the LED driving power supply and the housing of the present invention;

[0022] Figure 2 for Figure 1 Exploded diagram of

[0023] Figure 3 It is a structural schematic diagram of the anti-seepage sealing component of the LED driving power supply of the present invention;

[0024] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0025] Figure 5 for Figure 1 Schematic diagram of the internal structure;

[0026] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0027] Figure 7 for Figure 6 A partial enlargement of the center C Figure 1 ;

[0028] Figure 8 for Figure 6 A partial enlargement of the center C Figure 2 ;

[0029] Fig. 9 for Figure 6 A partial enlargement of the center C Figure 3 ;

[0030] Fig.10 for Figure 6 A partial enlargement of the center C Figure 4 .

[0031] in:

[0032] 100, elastic body; 101, transverse part; 102, vertical part; 103, second accommodating cavity; 104, bending part; 110, first accommodating cavity; 200, water-absorbing expansion body; 201, first water-absorbing expansion body; 202, second water-absorbing expansion body; 203, third water-absorbing expansion body; 204, fourth water-absorbing expansion body; 205, fifth water-absorbing expansion body; 300, reinforcement; 400, shell; 410, lower shell; 411, first mounting column; 412, second mounting column; 413, first annular boss; 414, first half hole; 4 20. Upper shell; 421. Second half hole; 422. Second annular boss; 430. Through hole; 500. Anti-seepage sealing assembly; 600. LED driving power supply; 610. First cable; 620. Second cable; 630. Circuit board; 631. Mounting hole; 700. First gap; 701. Second gap; 801. First contact position; 802. Second contact position; 803. Third contact position; 804. Fourth contact position; 805. Fifth contact position; 806. Sixth contact position; 807. Seventh contact position. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] Combine the following Figures 1 to 10 The anti-seepage sealing component 500 of the LED driving power supply of the present invention is described.

[0037] like Figures 3 to 6 As shown, the anti-seepage sealing component of the LED driving power supply of the present invention is installed in the gap of the housing 400 of the LED driving power supply, and specifically includes: an elastic body 100 and a plurality of water-absorbing swelling bodies 200 .

[0038] like Figure 3 and Figure 4 As shown, the elastic body 100 has a plurality of stacked first accommodating cavities 110, the openings of two adjacent first accommodating cavities 110 are opposite, and the first accommodating cavities 110 are in contact with the side wall of the housing 400 (see Figure 6 ).

[0039] Each water-absorbing swelling body 200 is disposed in the corresponding first accommodating cavity 110 and can swell after absorbing water to apply a force to the first accommodating cavity 110 , thereby increasing the sealing between the first accommodating cavity 110 and the side wall of the housing 400 .

[0040] The present invention arranges an elastic body 100 and a plurality of water-absorbing swelling bodies 200 in the gap of the shell 400, and utilizes the water-absorbing swelling body 200 to absorb the moisture entering the gap of the shell 400, and expands after absorbing the moisture, so as to apply a force to the elastic body 100, so that the corresponding first accommodating cavity 110 is deformed, so that the first accommodating cavity 110 and the shell 400 are more closely fitted, the sealing is improved, and the moisture is prevented from entering the shell 400. In addition, a plurality of water-absorbing swelling bodies 200 are stacked, and when the upper water-absorbing swelling body 200 and the corresponding first accommodating cavity 110 play a sealing role, the lower water-absorbing swelling body 200 and the corresponding first accommodating cavity 110 maintain elastic properties, so as to prevent the lower water-absorbing swelling body 200 and the corresponding first accommodating cavity 110 from having a poor sealing effect during this period. The elastic body 100 can be adjusted within a certain range to prevent the poor sealing effect caused by the manufacturing error of the shell 400.

[0041] In the illustrated embodiment, the water-absorbing expansion body 200 is set to 5, specifically including a first water-absorbing expansion body 201, a second water-absorbing expansion body 202, a third water-absorbing expansion body 203, a fourth water-absorbing expansion body 204 and a fifth water-absorbing expansion body 205, but the number thereof can be adjusted according to the circumstances, for example, it can be set to any number between 4 and 10.

[0042] In one possible embodiment, Figure 4 As shown, the elastomer 100 includes a transverse portion 101 and a vertical portion 102 that are spaced apart in sequence, the vertical portion 102 and its two adjacent transverse portions 101 form a first accommodating cavity 110, and the transverse portion 101 is inclined so that the length of the opening of the first accommodating cavity 110 is smaller than the length of the vertical portion 102.

[0043] In one possible embodiment, Figure 4 As shown, the transverse portion 101 has a second accommodating cavity 103, which extends along the extension direction of the transverse portion 101, and its two ends extend into the adjacent vertical portion 102 and extend a predetermined length along the vertical direction to form a bending portion 104, and a reinforcement 300 is installed in the second accommodating cavity 103, and the elastic modulus of the reinforcement 300 is greater than the elastic modulus of the elastomer 100.

[0044] The reinforcement 300 acts as a reinforcing rib and is used to maintain the basic shape of the position of the reinforcement 300 when the water-absorbing and expanding body 200 absorbs water and expands, so that the top pressure between the elastomer 100 and the two side walls is maintained at a relatively large state. If the reinforcement 300 is not provided, then when the water-absorbing and expanding body 200 absorbs water and expands, the original position of the reinforcement 300 is entirely composed of the elastomer 100 with relatively weak rigidity, and the elastomer 100 can relieve the pressure by deformation, and it cannot be guaranteed that the pressure between the elastomer 100 and the two side walls is large enough, and thus the sealing cannot be guaranteed.

[0045] In a possible embodiment, the material of the elastic body 100 can be polyethylene, rubber, latex regenerated rubber, eucommia gum, etc. The type of the material of the elastic body 100 is not limited to this, and it can be any form in the prior art as long as it can achieve the above functions.

[0046] In a possible implementation, the reinforcement member 300 may be made of iron sheet, aluminum alloy, carbon steel sheet, etc. The type of material of the reinforcement member 300 is not limited thereto, and it may be any form in the prior art as long as it can achieve the above functions.

[0047] like Figure 1 and Figure 2 As shown, the housing 400 of the LED driving power supply of the present invention includes a lower housing 410 and an upper housing 420 .

[0048] like Figure 2 As shown, the lower housing 410 has a first mounting column 411 and a second mounting column 412. The side wall of the lower housing 410 has a first half hole 414.

[0049] The first mounting post 411 is used to mount the upper housing 420 .

[0050] The second mounting column 412 is used to mount a circuit board 630 of the LED driving power supply 600 described below.

[0051] The first half hole 414 is used to form a through hole 430 with the second half hole 421 described below.

[0052] In a possible embodiment, the material of the water-swellable body 200 can be selected from materials such as super absorbent resin (SAP), natural hydrogel, synthetic polymer-based hydrogel, etc. The type of material of the water-swellable body 200 is not limited to this, and it can be any form in the prior art as long as it can achieve the above functions.

[0053] like Figure 2 and Figure 6 As shown, the top of the lower shell 410 has a first annular boss 413 protruding upward, the thickness of the first annular boss 413 is less than the thickness of the lower shell 410, and the outer side of the first annular boss 413 is flush with the outer side of the lower shell 410, and the first annular boss 413 is used to form a first gap 700 with the second annular boss 422 described below.

[0054] like Figure 1 and Figure 2 As shown, the upper shell 420 has a mounting groove corresponding to the first mounting column 411, and the first mounting column 411 is inserted into the mounting groove to assemble the upper shell 420 and the lower shell 410 together.

[0055] The side wall of the upper shell 420 has a second half hole 421 , and the second half hole 421 and the first half hole 414 of the lower shell 410 together form a through hole 430 for the first cable 610 and the second cable 620 described below to pass through.

[0056] like Figure 6 As shown, the bottom of the upper shell 420 has a second annular boss 422 protruding downward, the thickness of the second annular boss 422 is less than the thickness of the upper shell 420, and the inner side of the second annular boss 422 is flush with the inner side of the upper shell 420, the second annular boss 422 and the first annular boss 413 form a first gap 700, and the elastomer 100 and the water-absorbing expansion body 200 are installed in the first gap 700.

[0057] like Figure 1 and Figure 2As shown, the LED driving power supply 600 includes a circuit board 630 , a first cable 610 and a second cable 620 .

[0058] like Figure 2 As shown, the circuit board 630 has a mounting hole 631 , and the second mounting post 412 of the lower housing 410 can be inserted into the mounting hole 631 to mount the circuit board 630 inside the lower housing 410 .

[0059] One end of the first cable 610 is connected to the input end of the circuit board 630, and the other end of the first cable 610 can be connected to an external power source. The first cable 610 passes through a through hole 430 of the housing 400 (see FIG. Figure 1 ).

[0060] One end of the second cable 620 is connected to the output end of the circuit board 630 , and the other end of the second cable 620 is connected to the LED lamp. The second cable 620 passes through another through hole 430 of the housing 400 .

[0061] The working process of the anti-seepage sealing assembly of the LED driving power supply of the present invention is described below in conjunction with the accompanying drawings.

[0062] When the anti-seepage sealing assembly 500 of the LED driving power supply is not placed in the first gap 700, the transverse portion 101 is already in a tilted state.

[0063] The circuit board 630 of the LED driving power supply 600 is mounted on the second mounting column 412 of the lower housing 410 .

[0064] The anti-seepage sealing assembly 500 of the LED driving power supply is placed inside the first annular boss 413 of the lower housing 410 .

[0065] The upper housing 420 is mounted on the lower housing 410, and the first annular boss 413 of the lower housing 410 and the second annular boss 422 of the upper housing 420 form a first gap 700 (see Figure 6 and Figure 7 ). At this time, the first annular boss 413 and the second annular boss 422 will slightly squeeze the elastic body 100, so that the inclination of the transverse portion 101 is greater. In order to more conveniently describe the state change, Figures 7 to 10 In the figure, the contact position is marked with a rectangular frame, wherein a solid rectangular frame is used to emphasize a position that is further squeezed in a certain state, while other positions are indicated with a dotted rectangular frame. It should be noted that the rectangular frame is only used to mark the contact position and does not contain other meanings.

[0066] like Figure 8As shown, when air containing moisture enters the first gap 700 from the second gap 701, the first water-absorbing and expanding body 201 absorbs moisture and expands to apply a force to the vertical portion 102 inside and the horizontal portion 101 below. This force makes the vertical portion 102 inside fit more closely with the second annular boss 422 of the upper shell 420, thereby improving the sealing of the first contact position 801. This force also makes the inclination of the horizontal portion 101 below less, thereby making the outer side of the horizontal portion 101 below fit more closely with the first annular boss 413 of the lower shell 410, thereby improving the sealing of the second contact position 802. To make it easier to distinguish, Figure 8 In the figure, the first contact position 801 and the second contact position 802 are indicated by solid rectangular frames, and the other contact positions are indicated by dotted rectangular frames.

[0067] exist Figure 8 In the state, only the first contact position 801 and the second contact position 802 are further sealed (indicated by the solid rectangular box), while the contact positions below (such as the third contact position 803, the fourth contact position 804, the fifth contact position 805, the sixth contact position 806, etc.) are not further sealed, so that only the first contact position 801 and the second contact position 802 produce plastic deformation or aging, while the contact positions below (such as the third contact position 803, the fourth contact position 804, the fifth contact position 805, the sixth contact position 806, etc.) maintain elastic properties.

[0068] After a period of use, the first contact position 801 and the second contact position 802 may both undergo plastic deformation or aging, causing the air containing moisture to begin to flow downward. The following describes the plastic deformation or aging of the first contact position 801 and the plastic deformation or aging of the second contact position 802.

[0069] like Fig. 9 As shown, taking the first contact position 801 (indicated by a dotted rectangular frame) as an example of plastic deformation or aging, and the second contact position 802 maintaining elastic properties, the air containing moisture flows downward through the first contact position 801 and contacts the second water-absorbing and swelling body 202, and the second water-absorbing and swelling body 202 absorbs moisture and expands, so as to apply a force to the vertical portion 102 outside the second water-absorbing and swelling body 202 and the horizontal portion 101 below. This force makes the vertical portion 102 outside fit more closely with the first annular boss 413 of the lower shell 410, thereby improving the sealing performance of the third contact position 803 (indicated by a solid rectangular frame). This force also makes the inclination of the horizontal portion 101 below smaller, thereby making the inner side of the horizontal portion 101 below fit more closely with the second annular boss 422 of the upper shell 420, thereby improving the sealing performance of the fifth contact position 805 (indicated by a solid rectangular frame).

[0070] like Fig.10 As shown, the second contact position 802 (indicated by a dotted rectangular frame) is plastically deformed, and the air containing moisture flows downward through the second contact position 802, the third contact position 803 and the fourth contact position 804, and contacts the third water-absorbing and swelling body 203. The third water-absorbing and swelling body 203 absorbs moisture and expands to apply a force to the vertical portion 102 inside and the horizontal portion 101 below. This force makes the vertical portion 102 inside fit more closely with the second annular boss 422 of the upper shell 420, thereby improving the sealing performance of the sixth contact position 806. This force also makes the inclination of the horizontal portion 101 below less, thereby making the outer side of the horizontal portion 101 below fit more closely with the first annular boss 413 of the lower shell 410, thereby improving the sealing performance of the seventh contact position 807.

[0071] Except in Fig. 9 Further changes can be made directly in Figure 8 Specifically, the first contact position 801 maintains elastic properties, while the second contact position 802 undergoes plastic deformation or aging, and the air containing moisture flows downward through the second contact position 802, the third contact position 803, and the fourth contact position 804, and contacts the third water-absorbing expansion body 203, and the third water-absorbing expansion body 203 absorbs moisture and expands. The principle is the same as Figure 9 to Figure 10 The changes are similar and will not be elaborated on.

[0072] By analogy, whenever a contact position fails to ensure sealing due to plastic deformation or aging, the subsequent contact position can take over the current contact position that has undergone plastic deformation or aging and continue to seal, thereby achieving a stepped seal. In addition, when the upper contact position is sealing, the lower contact position maintains elastic properties, and only when the upper contact position undergoes plastic deformation or fails due to aging and cannot seal, the adjacent contact position below will move, thereby extending the overall service life. That is, in a stepped seal, when the first-level seal is working, the subsequent seals will not move or deform; when the first-level seal undergoes plastic deformation or fails due to aging, the second-level seal starts to work, and the subsequent seals after the second-level seal will not move or deform.

[0073] In addition, since the transverse portion 101 can be deformed to change the length of the transverse portion 101 in the horizontal direction, even if the spacing between the first annular boss 413 of the lower shell 410 and the second annular boss 422 of the upper shell 420 is not standard (for example, too large or too small) due to process problems, the transverse portion 101 can also adapt to ensure sealing.

[0074] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An anti-seepage sealing component of an LED driving power supply, installed in a first gap (700) of a housing (400) of the LED driving power supply, characterized in that: include: An elastic body (100) having a plurality of stacked first accommodating cavities (110), the openings of two adjacent first accommodating cavities (110) being opposite to each other, and the first accommodating cavities (110) being in contact with a side wall of the housing (400); A plurality of water-absorbing swelling bodies (200), each of the water-absorbing swelling bodies (200) being arranged in a corresponding first accommodating cavity (110) and being capable of swelling after absorbing water so as to apply a force to the first accommodating cavity (110) in which it is located, thereby increasing the sealing performance between the first accommodating cavity (110) and the side wall of the shell (400), the elastic body (100) comprising a transverse portion (101) and a vertical portion (102) which are sequentially spaced apart, the vertical portion (102) and the two adjacent transverse portions (101) enclosing the first accommodating cavity (110), and the transverse portion (101) being arranged obliquely so that the length of the opening of the first accommodating cavity (110) is smaller than the length of the vertical portion (102).

2. The anti-seepage sealing assembly of the LED driving power supply according to claim 1, characterized in that: The transverse portion (101) has a second accommodating cavity (103), the second accommodating cavity (103) extending along the extension direction of the transverse portion (101), and the two ends of the second accommodating cavity extending into the adjacent vertical portion (102) and extending a predetermined length along the vertical direction to form a bent portion (104), a reinforcing member (300) being installed in the second accommodating cavity (103), the elastic modulus of the reinforcing member (300) being greater than the elastic modulus of the elastomer (100).

3. The anti-seepage sealing component of the LED driving power supply according to claim 1, characterized in that: The material of the elastomer (100) is polyethylene, rubber, latex regenerated rubber or eucommia gum.

4. The anti-seepage sealing assembly of the LED driving power supply according to claim 2, characterized in that: The reinforcement (300) is an iron sheet, an aluminum alloy or a carbon steel sheet.

5. The anti-seepage sealing assembly of the LED driving power supply according to claim 1, characterized in that: The material of the water-absorbing swelling body (200) is a highly water-absorbent resin, a natural hydrogel or a synthetic polymer-based hydrogel.

6. The anti-seepage sealing assembly of the LED driving power supply according to claim 1, characterized in that: The shell (400) comprises a lower shell (410) and an upper shell (420); the top of the lower shell (410) has a first annular boss (413) protruding upward, and the bottom of the upper shell (420) has a second annular boss (422) protruding downward, and the second annular boss (422) and the first annular boss (413) form a first gap (700) for mounting the elastomer (100) and the water-absorbing expansion body (200).

7. The anti-seepage sealing assembly of the LED driving power supply according to claim 6, characterized in that: The lower shell (410) has a first mounting column (411), and the upper shell (420) has a mounting groove, and the first mounting column (411) is inserted into the mounting groove.

8. The anti-seepage sealing assembly of the LED driving power supply according to claim 6, characterized in that: The side wall of the lower shell (410) has a first half hole (414), and the side wall of the upper shell (420) has a second half hole (421).

9. The anti-seepage sealing assembly of the LED driving power supply according to claim 6, characterized in that: The lower housing (410) has a second mounting column (412) for mounting a circuit board (630) of the LED driving power supply.

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