Power supply box, lamp and lighting system

Abstract

The utility model provides a power supply box, a lamp and a lighting system, the power supply box comprises a bottom box, the bottom box is provided with a first containing cavity, a first clamping part and a clamping structure, the clamping structure is located in the first containing cavity, and the bottom of the first containing cavity is provided with a first connecting column and a second through hole; the upper cover is provided with a second containing cavity and a second clamping part formed in the second containing cavity, the bottom box is inserted into an opening of the second containing cavity, the first clamping part and the second clamping part are connected in a clamped mode, and a second connecting column is arranged at the bottom of the second containing cavity; a substrate of the printed circuit board assembly is connected with the clamping structure in a clamping manner, and the substrate is provided with a first through hole; the first bolt penetrates through the first through hole and then is connected with the first connecting column; the second bolt penetrates through the second through hole and then is connected with the second connecting column. The lamp is provided with the power supply box, the lighting system comprises the lamp, and the power supply box has the advantages of being high in connection strength, not prone to loosening and disengaging, not prone to being damaged during disassembly and convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to lamp technical field, specifically, it is related to a power box and the lamp with the power box, the lighting system with the lamp. BACKGROUND

[0002] The existing power box includes upper cover, bottom box and printed circuit board assembly, wherein, the upper cover and the bottom box are connected through the first buckle structure, the upper cover and the bottom box form the accommodating cavity, the printed circuit board assembly is located in the accommodating cavity, and the printed circuit board assembly is installed on the bottom box through the second buckle structure. Although the buckle structure is used to connect the upper cover, the bottom box and the printed circuit board assembly, the power box can be quickly assembled, but the following shortcomings exist:

[0003] First, the connection strength is limited, when the first buckle structure is insufficient, the upper cover and the bottom box are easy to loosen and separate, when the second buckle structure is insufficient, the bottom box and the printed circuit board assembly are easy to loosen and separate, especially in the occasion of falling, vibration, and the noise is easy to appear due to the loose connection between parts.

[0004] Second, the matching precision of the buckle structure is high, the size precision of the buckle structure is not up to standard, which may cause assembly difficulty, loose connection or assembly failure, and the higher the matching precision, the more difficult the production, the more strict the production requirement, and the higher the production cost; in addition, when the matching precision of the buckle structure is higher and the buckling is more closely, the disassembly of the upper cover and the bottom box is more difficult, the disassembly of the bottom box and the printed circuit board assembly is more difficult, and the upper cover, the bottom box and the printed circuit board assembly are easy to be damaged in the disassembly process. SUMMARY

[0005] In order to solve the above problems, the main purpose of the utility model is to provide a power box with high connection strength, which is not easy to loosen and separate, and is not easy to be damaged during disassembly and convenient to maintain.

[0006] Another purpose of the utility model is to provide a lamp with the above power box.

[0007] Still another purpose of the utility model is to provide a lighting system with the above lamp.

[0008] In order to realize the main purpose of the utility model, the utility model provides a power box, including bottom box, upper cover and printed circuit board assembly, the bottom box has first accommodating cavity, first clamping part and clamping structure, the first clamping part is shaped in the outer periphery of first accommodating cavity, the clamping structure is located in first accommodating cavity, the upper cover has second accommodating cavity and second clamping part, the second clamping part is shaped in second accommodating cavity, the bottom box is inserted in the open mouth of second accommodating cavity, the first clamping part and second clamping part are clamped and are connected, the printed circuit board assembly is located in first accommodating cavity and second accommodating cavity, the substrate of printed circuit board assembly is clamped and is connected with clamping structure, wherein, the bottom of first accommodating cavity is equipped with first connecting column, the substrate is equipped with the first through hole matched with first connecting column, the bottom of second accommodating cavity is equipped with second connecting column, and the bottom box is equipped with the second through hole matched with second connecting column, the power box further includes first bolt and second bolt, the first bolt is connected with first connecting column after passing through first through hole, and the second bolt is connected with second connecting column after passing through second through hole.

[0009] As can be seen from the above, the first connecting column is additionally arranged on the bottom box, the first connecting hole is additionally arranged on the substrate, and the first bolt is additionally arranged to connect the substrate and the first connecting column, so that the assembly precision requirement between the clamping structure on the bottom box and the substrate is not high, and the composite fixing of the bottom box and the substrate can be realized, the connection strength between the two is effectively increased, the substrate assembled on the bottom box is not prone to loosening and abnormal sound, and is not prone to falling off, and damage of the clamping structure and / or the substrate caused by excessive clamping amount of the clamping structure when the substrate and the bottom box are disassembled is avoided.

[0010] One preferred scheme is that the clamping structure includes a support rib group and a buckle group, a clamping position is formed between the support rib group and the buckle group, and the substrate is located in the clamping position; the support rib group is formed on the bottom wall of the first accommodating cavity, or the support rib group is formed on both of the first inner side walls of the bottom box; the buckle group is formed on both of the first inner side walls, and the two first inner side walls are distributed along the width direction of the power box.

[0011] As can be seen from the above, the support rib group is used for supporting the substrate to improve the structural strength of the substrate after installation; at the same time, the support rib group cooperates with the buckle group, so that the substrate is buckled on the support rib group by the buckle group.

[0012] Further, the number of the first connecting columns is two, the number of the first through holes and the number of the first bolts is equal to the number of the first connecting columns; the support rib group comprises a plurality of support ribs which are distributed at equal intervals along the length direction of the power box; the buckle group comprises a plurality of first buckles which are distributed at equal intervals along the length direction; in the length direction, one first connecting column is located at one end of the base plate, the first interval is between two adjacent support ribs, the second interval is between the first connecting column and the support rib closest to the first connecting column, and the first interval is between 1 times and 2 times the second interval.

[0013] As can be seen from the above, the design can decompose the resultant force of the base plate into a plurality of component forces on the bottom box, cooperate with the first bolts at both ends of the base plate, balance the force of the base plate, improve the overall structural strength, prevent vibration and falling off, and prevent the first connecting column from cracking due to excessive force.

[0014] Further, the first interval is between 45 mm and 55 mm, and the third interval between two adjacent first buckles is between 45 mm and 55 mm.

[0015] As can be seen from the above, the design can ensure that the clamping structure reliably supports and clamps the base plate, optimize the size of the bottom box, and simplify the structure of the bottom box.

[0016] Further, the power box is substantially a square box, the number of the second connecting columns is two, the two second connecting columns are distributed at opposite corners of the second accommodating cavity, the number of the second through holes and the number of the second bolts is equal to the number of the second connecting columns; the base plate forms an avoiding gap at the second connecting column, and the second bolt passes through the avoiding gap; the first buckle is formed with a gap on both sides, and the gap penetrates the first inner side wall.

[0017] As can be seen from the above, the design can ensure the reliability of the connection between the bottom box and the upper cover through the second bolt, and avoid the connection between the base plate and the second bolt to ensure the force balance of the base plate.

[0018] Further, the bottom box and the upper cover are formed with a wire passing buckle at the avoiding gap, and the wire passing buckle penetrates the wall of the bottom box and the upper cover in the length direction.

[0019] As can be seen from the above, the wire passing buckle is used for the cable to pass through the power box and connect with the base plate, thereby supplying power to the power box, and enabling the power box to stably supply power to the light source of the lamp, and control the light source to illuminate according to the set mode; in addition, the wire passing buckle can also cooperate with the wire clamp provided on the cable to fix the cable, so as to prevent the cable from moving or disconnecting from the base plate.

[0020] Another preferred scheme is that the first clamping part is a first clamping groove, and the second clamping part is a second clamping buckle; limit blocks are formed on the two second inner side walls of the bottom box, and the two second inner side walls are distributed along the length direction of the power box.

[0021] As can be seen from the above, through the design of the first clamping part and the second clamping part, the external powder bin can be better prevented from entering the inside of the power box through the second clamping part, thereby reducing the probability of pollution and damage of the printed circuit board assembly, and ensuring the stability and reliability of the working of the printed circuit board assembly; and the limit blocks are formed on the two second inner side walls of the bottom box, so that the limit blocks can limit the printed circuit board assembly in the length direction of the power box.

[0022] A further scheme is that the substrate is provided with electronic components, the electronic components are located between the substrate and the bottom wall of the second accommodating cavity, and a heat dissipation pad is arranged between the electronic components and the bottom wall of the second accommodating cavity.

[0023] As can be seen from the above, the heat dissipation pad can improve the heat dissipation effect of the electronic components with high heat generation; at the same time, the heat dissipation pad can also play a buffering role to protect the electronic components and the printed circuit board assembly when the power box falls or is impacted, so as to avoid damage.

[0024] In order to achieve another purpose of the utility model, the utility model provides a lamp, including light source, wherein, still include above -mentioned power box, light source and substrate electric connection.

[0025] As can be seen from the above, the lamp is provided with the above-mentioned power box, so that it is more convenient to maintain the power box, and unnecessary damage to the power box is not easy to cause, thereby reducing the maintenance cost and improving the overall performance of the product.

[0026] In order to achieve still another purpose of the utility model, the utility model provides a lighting system, including control terminal, wherein, the lighting system still includes above-mentioned lamp, control terminal and printed circuit board assembly electric connection, and / or control terminal and printed circuit board assembly carry out information interaction.

[0027] As can be seen from the above, the lighting system provided with the above-mentioned lamp is more convenient to maintain the power box of the lamp, and unnecessary damage to the power box is not easy to cause, thereby reducing the maintenance cost and improving the overall performance of the product. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the exploded view of the first embodiment of the power box of the utility model.

[0029] Figure 2 is the structural diagram of the bottom box of the first embodiment of the power box of the utility model.

[0030] Figure 3It is the structure view of the upper cover of the first embodiment of the power box.

[0031] Figure 4 It is the structure view of the first embodiment of the power box.

[0032] Figure 5 It is the sectional view of the first embodiment of the power box under the first visual angle.

[0033] Figure 6 It is the sectional view of the first embodiment of the power box under the second visual angle.

[0034] Figure 7 It is the structure view of the printed circuit board assembly of the first embodiment of the power box.

[0035] Figure 8 It is the structure view of the first embodiment of the power box after omitting part of the assembly.

[0036] Figure 9 It is the sectional view of the first embodiment of the power box after omitting part of the assembly under the first visual angle.

[0037] Figure 10 It is the sectional view of the first embodiment of the power box after omitting part of the assembly under the second visual angle.

[0038] Figure 11 It is the sectional view of the first embodiment of the power box.

[0039] Figure 12 It is the structure view of the bottom box of the second embodiment of the power box.

[0040] Figure 13 It is the sectional view of the second embodiment of the power box after omitting part of the assembly.

[0041] The utility model will be further described below in combination with the drawings and embodiments. DETAILED DESCRIPTION

[0042] The first embodiment of the power box

[0043] Referring to Figure 1 , the power box 100 comprises a bottom box 1, an upper cover 2, a printed circuit board assembly 3, a first bolt 41, a second bolt 42, a heat dissipation pad 5 and a cable.

[0044] In combination with Figure 2The bottom box 1 has a first accommodating cavity 11, which is used to accommodate part of the printed circuit board assembly 3. The bottom box 1 is formed with a first clamping portion 12 on the outer peripheral wall of the first accommodating cavity 11, which is used to be connected with the upper cover 2 to realize the assembly of the bottom box 1 and the upper cover 2. The first clamping portion 12 is formed with a clamping mechanism 13 in the first accommodating cavity 11, which is used to be connected with the substrate 31 of the printed circuit board assembly 3 to fix the printed circuit board assembly 3 on the bottom box 1.

[0045] In combination Figure 3 The upper cover 2 has a second accommodating cavity 21, which is used to accommodate another part of the printed circuit board assembly 3 to make the bottom box 1 and the upper cover 2 surround and protect the printed circuit board assembly 3. The second accommodating cavity 21 is formed with a second clamping portion 22 matched with the first clamping portion 12, so that when the bottom box 1 is assembled with the upper cover 2, the bottom box 1 is inserted into the opening of the second accommodating cavity 21, and the first clamping portion 12 is clamped and connected with the second clamping portion 22. Among them, one of the first clamping portion 12 and the second clamping portion 22 is a first clamping groove, and the other is a second clamping buckle; preferably, the first clamping portion 12 is designed as a first clamping groove, and the second clamping portion 22 is designed as a second clamping buckle, which can better avoid the external powder bin from entering the inside of the power box 100 through the second clamping portion 22, thereby reducing the probability of the printed circuit board assembly 3 being contaminated and damaged, and ensuring the stability and reliability of the printed circuit board assembly 3.

[0046] Preferably, the first clamping portion 12 is formed on two first side walls of the bottom box 1, which are distributed along the width direction of the bottom box 1, and more than two first clamping portions 12 are formed on each first side wall; correspondingly, the second clamping portion 22 is formed on two third side walls of the upper cover 2, which are distributed along the width direction of the bottom box 1, and more than two second clamping portions 22 are formed on each third side wall, so that one second clamping portion 22 is matched and clamped with one first clamping portion 12. Since the depth of the second accommodating cavity 21 of the upper cover 2 is large, a plurality of reinforcing ribs 24 are formed on each third side wall to improve the structural strength of the third side wall.

[0047] In combination Figures 4 to 6In order to further improve the connection strength between the bottom box 1 and the upper cover 2, avoid looseness and abnormal sound between the bottom box 1 and the upper cover 2 after assembly, and improve the anti-falling and impact performance between the bottom box 1 and the upper cover 2 after assembly, a second connecting column 23 is formed in the second accommodating cavity 21 of the upper cover 2, and the second connecting column 23 extends from the bottom of the second accommodating cavity 21 to the opening of the second accommodating cavity 21 in the height direction of the power box 100. Correspondingly, the bottom box 1 is formed with a second through hole 15 at the second connecting column 23, and the second through hole 15 is matched with the second connecting column 23, that is, the second through hole 15 is preferably coaxially arranged with the second connecting column 23, and the second through hole 15 is formed at the bottom of the first accommodating cavity 11 and penetrates the bottom box 1 in the height direction of the power box 100. When the bottom box 1 is assembled on the upper cover 2 through the first clamping mechanism 13 of the bottom box 1 and the second clamping mechanism 13 of the upper cover 2, the second bolt 42 is connected with the second connecting column 23 after penetrating the second through hole 15 from the bottom of the bottom box 1. This design enables the composite fixing between the bottom box 1 and the upper cover 2, effectively increases the connection strength between them, and also reduces the assembly precision requirement between the first clamping part 12 and the second clamping part 22. In addition, when the use requirement of the power box 100 is not high, the installation of the second bolt 42 can be cancelled; at this time, the cooperation between the first clamping part 12 and the second clamping part 22 can still meet the requirement of preventing the separation of the bottom box 1 and the upper cover 2.

[0048] Preferably, the power box 100 is substantially square box-shaped, the number of the second connecting columns 23 is two, and the two second connecting columns 23 are distributed at opposite corners of the second accommodating cavity 21; the number of the second through holes 15 and the number of the second bolts 42 are equal to the number of the second connecting columns 23.

[0049] In combination Figures 7 to 10 The substrate 31 of the printed circuit board assembly 3 is clamped and connected with the clamping mechanism 13 of the bottom box 1, so that the printed circuit board assembly 3 is fixed on the bottom box 1 and located in the first accommodating cavity 11 and the second accommodating cavity 21. The clamping mechanism 13 includes a support rib group 131 and a buckle group 132, and a clamping position is formed between the support rib group 131 and the buckle group 132, and the substrate 31 is substantially located in the clamping position. Preferably, limit blocks 16 are formed on the two second inner side walls of the bottom box 1, and the two second inner side walls are distributed along the length direction of the power box 100, so that the substrate 31 of the printed circuit board assembly 3 is located between the limit blocks 16 of the second inner side walls. When the substrate 31 of the printed circuit board assembly 3 is installed on the bottom box 1, the limit blocks 16 are preferably adjacent to the substrate 31, and the limit blocks 16 can limit the printed circuit board assembly 3 in the length direction of the power box 100, so as to effectively prevent the printed circuit board assembly 3 from moving in the length direction of the power box 100 when the printed circuit board assembly 3 is only fixed on the bottom box 1 by the clamping mechanism 13.

[0050] The support rib group 131 is formed on the bottom wall of the first accommodating cavity 11, or the two first inner side walls of the bottom box 1, as in the embodiment, the support rib group 131 is formed on the two first inner side walls of the bottom box 1. The two first inner side walls of the bottom box 1 are also formed with a buckle group 132; wherein the two first inner side walls of the bottom box 1 are distributed along the width direction of the power box 100. The support rib group 131 is used to support the substrate 31, so as to improve the structural strength of the substrate 31 after installation; at the same time, the support rib group 131 cooperates with the buckle group 132, so that the substrate 31 is buckled on the support rib group 131 by the buckle group 132.

[0051] In order to further improve the connection strength between the bottom box 1 and the printed circuit board assembly 3, a first connecting column 14 is formed in the first accommodating cavity 11 of the bottom box 1, the first connecting column 14 extends from the bottom of the first accommodating cavity 11 to the opening of the first accommodating cavity 11 in the height direction of the power box 100, and in the width direction of the power box 100, the first connecting column 14 is preferably located at the middle position of the two first inner side walls of the power box 100; correspondingly, the substrate 31 of the printed circuit board assembly 3 is provided with a through hole matching the first connecting column 14 at the first connecting column 14, that is, the second through hole 15 is preferably coaxially arranged with the first connecting column 14. When the substrate 31 is fixed by the clamping mechanism 13 in the first accommodating cavity 11, the first bolt 41 passes through the first through hole 311 and is connected with the first connecting column 14. This design can reduce the assembly precision requirement between the clamping mechanism 13 on the bottom box 1 and the substrate 31, and can realize composite fixing of the bottom box 1 and the substrate 31, effectively increase the connection strength between the two, so that the substrate 31 assembled on the bottom box 1 is not easy to loosen and make noise, and is not easy to fall off, and also avoids damage to the clamping mechanism 13 and / or the substrate 31 when the substrate 31 and the bottom box 1 are disassembled due to the excessive clamping amount of the clamping mechanism 13. In addition, when the use requirement of the power box 100 is not high, the installation of the first bolt 41 can be cancelled, at this time, the clamping mechanism 13 can still meet the requirement of preventing the printed circuit board assembly 3 from falling off.

[0052] Preferably, the number of the first connecting posts 14 is two; one of the first connecting posts 14 is located at one end of the base plate 31 in the length direction of the power box 100, i.e. both ends of the base plate 31 are provided with one first connecting post 14; the number of the first through holes 311 and the number of the first bolts 41 are equal to the number of the first connecting posts 14. In addition, the support rib group 131 comprises a plurality of support ribs 1311 distributed at equal intervals in the length direction of the power box 100, wherein the first interval L1 is between the adjacent two support ribs 1311, the second interval L2 is between the first connecting post 14 and the support rib 1311 closest to the first connecting post 14, and the first interval L1 is between 1 times and 2 times of the second interval L2, such as in the embodiment, the first interval L1 is 2 times of the second interval L2; the buckle group 132 comprises a plurality of first buckles 1321 distributed at equal intervals in the length direction of the power box 100, and the third interval L3 is between the adjacent two first buckles 1321. This design can decompose the resultant force of the base plate 31 as a whole into a plurality of component forces on the bottom box 1, effectively decompose the locking force of the two first bolts 41 at both ends of the base plate 31, make the force of the base plate 31 as a whole evenly distributed, improve the overall structural strength, and avoid the first connecting post 14 from cracking, at the same time, play the role of shockproof and anti-falling.

[0053] Preferably, the first interval L1 is between 45 mm and 55 mm; the third interval L3 between the adjacent two first buckles 1321 is between 45 mm and 55 mm. Such as in the embodiment, the first interval L1 is 50 mm; the third interval L3 is 50 mm. This design can optimize the size of the bottom box 1 and simplify the structure of the bottom box 1 on the basis of ensuring that the clamping mechanism 13 reliably supports and clamps the base plate 31. In addition, the first buckle 1321 is formed with a gap 1322 on both sides, and the gap 1322 penetrates the first inner side wall (i.e. the aforementioned first side wall) of the bottom box 1. This design enables the first buckle 1321 to deform elastically to meet the requirements, thereby ensuring the reliability of clamping and fixing the base plate 31, and avoiding damage to the first buckle 1321 during the installation of the base plate 31 to the bottom box 1.

[0054] Further, in order to avoid the base plate 31 affecting the force balance of the base plate 31 due to the connection with the second bolt 42, the base plate 31 is formed with an avoiding gap 312 at the second connecting post 23, and the avoiding gap 312 penetrates the base plate 31, so that the second bolt 42 can pass through the avoiding gap 312.

[0055] Further, the bottom box 1 and the upper cover 2 are both formed with a wire passing notch 10 at the avoiding gap 312, the wire passing notch 10 penetrates the wall of the bottom box 1 and the upper cover 2 in the length direction. The wire passing notch 10 is used for the cable to pass through the power box 100 and the substrate 31 to connect, so as to supply power for the power box 100, and enable the power box 100 to stably supply power for the light source of the lamp, and control the light source to illuminate according to the set mode; in addition, the wire passing notch 10 can also cooperate with the wire clamp 61 arranged on the cable to fix the cable, so as to prevent the cable from moving or disconnecting with the substrate 31.

[0056] In combination Figure 11 The substrate 31 of the printed circuit board assembly 3 is provided with electronic components 32, and at least part of the electronic components 32 is located between the substrate 31 and the bottom wall of the second accommodating cavity 21; preferably, a heat dissipation pad 5 can be arranged between part of the electronic components 32 and the bottom wall of the second accommodating cavity 21, so as to improve the heat dissipation effect of the electronic components 32 with high heat generation (such as transformers and the like); at the same time, the heat dissipation pad 5 can also play a buffering role to protect the electronic components 32 and the printed circuit board assembly 3 when the power box 100 falls or is impacted, so as to avoid damage.

[0057] In summary, the composite fixing structure is adopted between the components of the power box 100, so that the power box 100 as a whole has better anti-falling and impact performance, thereby reducing the probability of damage when falling or being impacted.

[0058] Second embodiment of the power box

[0059] In combination Figure 12 and Figure 13 The difference between the present embodiment and the first embodiment of the power box is the setting position of the support rib group, specifically, in the present embodiment:

[0060] The support rib group 612 is formed on the bottom wall of the first accommodating cavity 611 of the bottom box 61, wherein the support rib group 612 also includes a plurality of support ribs 6121 distributed at equal intervals in the length direction of the power box, and the first interval between adjacent two support ribs 6121 is also between 1 times and 2 times of the second interval.

[0061] Embodiment of the lamp

[0062] The lamp includes a light source and a power box, wherein the power box is the power box described in the first embodiment or the second embodiment, and the light source is electrically connected with the substrate of the printed circuit board assembly. The lamp is provided with the power box, so that it is more convenient to maintain the power box, and unnecessary damage to the power box is less likely to occur, thereby reducing the maintenance cost and improving the overall performance of the product.

[0063] Embodiment of the lighting system

[0064] The lighting system comprises a control terminal and the lamp mentioned in the above-mentioned lamp embodiment, the control terminal is electrically connected with the printed circuit board assembly of the power box of the lamp, and / or the control terminal and the printed circuit board assembly exchange information.

[0065] The control terminal can be a conventional control panel (such as a mechanical switch panel), a smart control panel or a remote controller. When the control terminal is a conventional control panel, the control terminal is electrically connected with the printed circuit board assembly.

[0066] When the control terminal is a smart control panel or a remote controller, a first wireless communication module is arranged on the printed circuit board assembly, a second wireless communication module is arranged on the control terminal, the control terminal is electrically connected with the printed circuit board assembly, and / or the first wireless communication module and the second wireless communication module exchange information.

[0067] In addition, the control terminal can also be a smart mobile terminal (such as a mobile phone, a tablet computer, a smart wearable device, etc.), and can also be an artificial intelligence robot. The lighting system is provided with the above-mentioned lamp, so that it is more convenient to maintain the power box of the lamp, and unnecessary damage to the power box is less likely to occur, thereby reducing the maintenance cost and improving the overall performance of the product.

[0068] Finally, it should be emphasized that the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power box, comprising: a bottom box having a first accommodating cavity, a first engaging portion formed on an outer periphery of the first accommodating cavity, and an engaging structure located in the first accommodating cavity; an upper cover having a second accommodating cavity and a second engaging portion formed in the second accommodating cavity, the bottom box being inserted into an opening of the second accommodating cavity, the first engaging portion and the second engaging portion being engaged; a printed circuit board assembly located in the first accommodating cavity and the second accommodating cavity, a substrate of the printed circuit board assembly being engaged with the engaging structure; characterized in that: a first connecting post is arranged at a bottom of the first accommodating cavity, and the substrate is provided with a first through hole matched with the first connecting post; a second connecting post is arranged at a bottom of the second accommodating cavity, and the bottom box is provided with a second through hole matched with the second connecting post; and the power box further comprises a first bolt and a second bolt, the first bolt being connected with the first connecting post after passing through the first through hole, and the second bolt being connected with the second connecting post after passing through the second through hole. 2.The power box according to claim 1, characterized in that: the engaging structure comprises a support rib group and a buckle group, a clamping position being formed between the support rib group and the buckle group, and the substrate being located in the clamping position; the support rib group is formed on a bottom wall of the first accommodating cavity, or the support rib group is formed on two first inner side walls of the bottom box; the buckle group is formed on the two first inner side walls, and the two first inner side walls are distributed along a width direction of the power box. 3.The power box according to claim 2, characterized in that: the number of the first connecting posts is two, and the number of the first through hole and the first bolt is equal to the number of the first connecting posts; the support rib group comprises a plurality of support ribs which are equally spaced along a length direction of the power box; the buckle group comprises a plurality of first buckles which are equally spaced along the length direction; in the length direction, one of the first connecting posts is located at one end of the substrate, a first spacing is formed between two adjacent support ribs, a second spacing is formed between the first connecting post and the support rib closest to the first connecting post, and the first spacing is between 1 times and 2 times of the second spacing. 4.The power box according to claim 3, characterized in that: the first spacing is between 45 mm and 55 mm; and a third spacing between two adjacent first buckles is between 45 mm and 55 mm. 5.The power box according to claim 3, characterized in that: the power box is substantially a square box, the number of the second connecting posts is two, the two second connecting posts are distributed at opposite corners of the second accommodating cavity, the number of the second through hole and the second bolt is equal to the number of the second connecting posts; the substrate is provided with an avoiding gap at the second connecting post, and the second bolt passes through the avoiding gap; and both sides of the first buckle are provided with slits, and the slits pass through the first inner side walls. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 6. The power box of claim 5, wherein: the bottom box and the upper cover are each formed with a wire passing notch at the avoiding gap, the wire passing notch penetrating the wall of the bottom box and the upper cover in the length direction.

7. The power box of claim 1, wherein: the first clamping part is a first clamping groove, and the second clamping part is a second clamping buckle; the bottom box is formed with a limiting block on each of two second inner side walls, the two second inner side walls being distributed along the length direction of the power box.

8. The power box of any one of claims 1 to 7, wherein: an electronic component is mounted on the substrate, the electronic component being located between the substrate and the bottom wall of the second accommodating cavity, and a heat dissipation pad being arranged between the electronic component and the bottom wall of the second accommodating cavity.

9. A luminaire comprising a light source, characterized in that The lighting system further comprises the power box of any one of claims 1 to 8, and the light source is electrically connected with the substrate.

10. A lighting system comprising a control terminal, wherein: the lighting system further comprises the lamp of claim 9; the control terminal is electrically connected with the printed circuit board assembly, and / or the control terminal and the printed circuit board assembly exchange information.

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