Lighting

Abstract

The lighting device of the present application includes: a carrier, provided with a circuit adapter component for connecting an external power source; the circuit adapter component is provided with at least one first plug-in portion; at least one light source assembly includes: a housing, formed with a first accommodating portion and a second accommodating portion; one or more light source units, provided in the first accommodating portion; each light source unit has one or more pairs of power pins; a driving circuit component, provided in the second accommodating portion, which includes: a second plug-in portion for positioning with the first plug-in portion and being able to be conductively connected and plugged; a conductive member, provided with a through hole for inserting each power pin, and being able to conductively contact each electrical connection pin; the conductive member and the driving circuit component can be conductively connected, so as to be conductively connected to the second plug-in portion through the driving circuit component. The lighting device of the present application can be used for plant growth lamps, and each light source unit is independent of each other. In the event of damage, each light source unit can be replaced separately, solving the problems of the prior art.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and in particular to lighting equipment. Background Art

[0002] In existing LED lighting devices, the light source modules mostly use a same substrate to carry multiple LED chips. Once an LED chip is damaged, the entire light source module needs to be replaced. This is particularly inconvenient for devices such as plant growth lamps that require multiple light source modules. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a lighting device to solve the problems of the prior art.

[0004] To achieve the above-mentioned objectives and other related objectives, the present application provides a lighting device, including: a carrier, provided with a circuit adapter component for connecting an external power supply; the circuit adapter component is provided with at least one first plug-in portion; at least one light source assembly, which includes: a shell, formed with a first accommodating portion and a second accommodating portion; one or more light source units, arranged in the first accommodating portion; each of the light source units has one or more pairs of power pins; a driving circuit component, arranged in the second accommodating portion, comprising: a second plug-in portion for positioning and conductively connecting with the first plug-in portion; the driving circuit component is used to convert the external power supply into power supply for the light source unit; a conductive member, provided with a through hole for inserting each power pin, and conductively contacting each electrical connection pin; the conductive member and the driving circuit component can be conductively connected to each other, so as to be conductively connected to the second plug-in portion through the driving circuit component.

[0005] In one embodiment of the present application, the lighting device comprises: at least one screw lock member, which is used to penetrate at least one positioning hole provided in the shell and is screwed and fixed to the connecting body.

[0006] In one embodiment of the present application, a third accommodating portion is formed in the housing for combining with the conductive member in a shape-matched manner.

[0007] In one embodiment of the present application, the circuit adapter component is provided with a plurality of first plug-in portions along its length direction for respectively plugging with the second plug-in portions of a plurality of light source assemblies.

[0008] In one embodiment of the present application, the length direction of the carrier is consistent with the length direction of the circuit adapter component, and a fourth accommodating portion for combining with the circuit adapter component in a shape-matched manner is provided in the carrier.

[0009] In one embodiment of the present application, the carrier is provided with one or more / pairs of suspension rods for suspension.

[0010] In one embodiment of the present application, the light source unit includes: a bracket component, which is placed on the lighting device and is provided with a first positioning portion; a light source mounting component, which has a second positioning portion for shape-matching with the first positioning portion; the light source mounting component has a bearing surface for setting light source electronic components; a lens component, which covers the bearing surface and is positioned and connected to the bracket component.

[0011] In one embodiment of the present application, the lighting device comprises: the one or more pairs of power pins, one end of which is electrically connected to the light source electronic component, and the other end of which passes through the bracket component and the light source mounting component and is exposed.

[0012] In one embodiment of the present application, the bracket component is provided with at least one first extension portion extending toward the lens component around the first positioning portion, and the light source mounting component is provided with at least one limiting portion for one-to-one combination with the at least one first extension portion.

[0013] In one embodiment of the present application, the first extension portion is a convex body extending toward the lens component, and the limiting portions are respectively located on the outer surface of the light source mounting component and are grooves that cooperate with the convex body.

[0014] In one embodiment of the present application, the light source mounting component includes: a main body; and at least two protruding structures arranged at intervals along the circumferential direction of the side surface of the main body, and the intervals between the protruding structures form the limiting portion.

[0015] In one embodiment of the present application, the lens component is provided with a second extension portion for combining with the limiting portion, and the first extension portion and the second extension portion are respectively combined with a portion of the limiting portion.

[0016] In one embodiment of the present application, the positioning connection is a snap-fit ​​connection; the bracket component is provided with a first snap-fit ​​portion; and the lens component is provided with a second snap-fit ​​portion for snap-fitting with the first snap-fit ​​portion.

[0017] In one embodiment of the present application, the first engaging portion is disposed on the first extending portion, and the second engaging portion is disposed on the second extending portion.

[0018] In an embodiment of the present application, the first engaging portion and the second engaging portion are respectively one and the other of a hook portion and a buckle portion engaged with the hook portion.

[0019] In one embodiment of the present application, the engaging manner of the first engaging portion and the second engaging portion includes any one of the following: 1) the first engaging portion is a hook portion located on the peripheral side of the bracket and protruding outward, for engaging with the second engaging portion located on its outer side; 2) the first engaging portion is a hook portion located on the peripheral side of the bracket and protruding inward; and, a blocking portion arranged opposite to the hook portion; wherein a gap is formed between the hook portion and the blocking portion for the buckle portion to be inserted and engaged with the hook portion; the width of the gap is adjustable to limit the buckle portion within the gap.

[0020] In one embodiment of the present application, the lighting device is a plant growth lamp.

[0021] As described above, the lighting device of the present application includes: a carrier, provided with a circuit adapter component for connecting an external power source; the circuit adapter component is provided with at least one first plug-in portion; at least one light source assembly, which includes: a housing, formed with a first accommodating portion and a second accommodating portion; one or more light source units, arranged in the first accommodating portion; each of the light source units has one or more pairs of power pins; a driving circuit component, arranged in the second accommodating portion, which includes: a second plug-in portion for positioning and conductively connecting with the first plug-in portion; the driving circuit component is used to convert the external power supply into power supply for the light source unit; a conductive member, provided with a through hole for inserting each power pin, and conductively contacting with each electrical connection pin; the conductive member and the driving circuit component can be conductively connected, so as to be conductively connected with the second plug-in portion through the driving circuit component. The lighting device of the present application can be used for plant growth lamps, and each light source unit is independent of each other. In the event of damage, each light source unit can be replaced separately, solving the problems of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic diagram of the exploded structure of the lighting device in an embodiment of the present application.

[0023] Figure 2 Shown is a schematic diagram of the combined structure of the lighting device in an embodiment of the present application.

[0024] Figure 3 Shown is a schematic diagram of the exploded structure of the light source unit in the embodiment of the present application.

[0025] Figure 4 Shown is a schematic structural diagram of a bracket component in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0027] In view of the fact that the light source module of the lighting device in the prior art is designed as an integral structure, which may easily lead to the adverse consequence that the entire light source module needs to be replaced when any light source therein is damaged, the present application provides a technical solution for the lighting device, in which each light source unit is designed as an independently replaceable component to solve the problems of the prior art.

[0028] It should be particularly noted that the technical solution of the present application can be applied to plant growth lamps, so that each light source component of the plant growth lamp can be plugged in and replaced, and the light source unit in each light source component can also be replaced, which is more conducive to improving the working life of the plant growth lamp; of course, the lighting equipment of the present application can also be applied to other lamps, and is not limited to this.

[0029] like Figure 1 As shown, a schematic diagram of the decomposed structure of the lighting device in an embodiment of the present application is shown.

[0030] The lighting device includes: a carrier 11, a circuit adapter component 12, and at least one light source assembly.

[0031] The carrier 11 is provided with a circuit adapter 12 for connecting to an external power source. In this embodiment, the carrier 11 is a component made of aluminum profiles, and its shape can be a bar as shown in the figure, and a receiving space for the circuit adapter 12 can be formed inside.

[0032] The accommodating space is matched with the shape of the circuit adapter component 12. For example, in the present embodiment, the circuit adapter component 12 is also a strip-shaped body, and the accommodating space includes an accommodating portion arranged along the length direction of the carrier 11 and matched with the circuit adapter component 12, such as a strip-shaped groove, which can accommodate and position the circuit adapter component 12 in the carrier 11.

[0033] In one embodiment, both ends of the carrier 11 may be closed by a cover 111. Optionally, one end of the carrier 11 may be connected to a power line 17 of an external power source and electrically connected to the circuit switching component 12, such as a 220V AC power line, and the power line 17 is coupled to the circuit switching component 12.

[0034] The circuit switching component 12 may be made of a conductive material or be provided with a circuit of a conductive material. For example, the circuit switching component 12 may be made of a metal material. Alternatively, the circuit switching component 12 may be a substrate such as a PCB or ceramic material provided with a conductive circuit (such as a printed copper foil circuit, etc.).

[0035] The circuit transfer component 12 is provided with at least one first plug-in portion 121, which can be a plug or a socket, and has a conductor (such as a metal pin or a metal socket, etc.) inside, which can conductively contact the circuit transfer component 12 (for example, by welding, etc.).

[0036] The light source assembly includes a housing 13 , one or more light source units 14 , a driving circuit component 15 , and a conductive member 16 .

[0037] A first receiving portion 131 and a second receiving portion 132 are formed in the housing 13 .

[0038] The one or more light source units 14 are disposed in the first receiving portion 131. In this embodiment, a plurality of light source units 14 are shown, arranged one by one along a linear direction. In this embodiment, each light source unit 14 is inverted downward, and one or more pairs of power pins are led out of its tail for connecting to a power source to supply power. The light source unit 14 may include a light source electronic component (such as an LED chip) that emits light after receiving power.

[0039] The conductive member 16 is provided with a through hole for inserting each power pin of each light source unit 14, and the power pin inserted into the through hole can be in conductive contact with the conductive member 16. The conductive member 16 can be made of conductive material such as metal.

[0040] The conductive member 16 can also be conductively connected to the driving circuit component 15. The driving circuit component 15 is provided with a second plug-in portion 151 positioned and conductively connected to the first plug-in portion 121. The first plug-in portion 121 and the second plug-in portion 151 can be one and the other of a male and female plug and a socket. When the first plug-in portion 121 and the second plug-in portion 151 are plugged in, the two can be conductively connected, and the external power supply is supplied to the driving circuit component 15 through the circuit adapter. The driving circuit component 15 is used to convert the AC power of the external power supply into a DC power supply (for example, DC 12V) for each light source unit 14. The driving circuit component 15 can include AC-DC, or include AC-DC and DC-DC power conversion circuits; the power output by the driving circuit component 15 is then transmitted to the power pins of each light source unit 14 through the conductive member 16, thereby supplying power to each light source unit 14.

[0041] Optionally, in order to enhance the firmness and waterproofness of the connection between the first plug-in portion 121 and the second plug-in portion 151, the two can also be combined through the openings on the pressure plate 122 and the sealing ring 123. The friction between the first plug-in portion 121 and the second plug-in portion 151 and the sealing ring 123 is conducive to the firmness of the connection between the two, and the sealing ring 123 can effectively achieve waterproofing; the pressure plate 122 can be fixed to each other by inserting fixing parts (such as screws, etc.) through the fixing holes on the pressure plate 122 and the circuit adapter component 12, so that the connection between the first plug-in portion 121 and the second plug-in portion 151 is more secure.

[0042] It should be noted that although the specific structure of the conductive connection between the second plug-in portion 151 and the drive circuit component 15 is not shown in this embodiment, those skilled in the art will understand that this connection can be achieved through various methods such as wires, metal connectors, welding, etc. Therefore, although it is not shown in the figure, it should not affect its specific implementation.

[0043] Similarly, in some embodiments, the circuit adapter component 12 may be provided with a plurality of first plug-in portions 121 along its length direction, and accordingly, the circuit adapter component 12 may be plugged with the second plug-in portions 151 of the plurality of light source assemblies, respectively, so that the plurality of light source assemblies are installed on the carrier 11 to form a circuit board as shown in FIG. Figure 2 From the lighting device shown, we can also see that the light source units 14 are arranged independently of each other after installation.

[0044] Optionally, a third accommodating portion 133 is formed in the housing 13 for combining with the conductive member 16 in a shape matching that of the conductive member 16. In this embodiment, as can be seen from the figure, since the light source units 14 are arranged along a line (a straight line in this embodiment, but of course it can also be a curve), the conductive member 16 is formed by connecting a plurality of alternate straight line segments and circular surfaces, and each circular surface is provided with a corresponding number of through holes 161 for each power pin of a light source unit 14 to pass through; and the third accommodating portion 133 is a groove with a shape matching that of the conductive member 16, for placing the conductive member 16 and positioning it laterally.

[0045] In this embodiment, optionally, the lighting device further comprises a plurality of pairs of screw locks 18, which are used to penetrate at least one positioning hole 134 provided in the housing 13 and are screwed and fixed to the connector. The screw locks 18 may be screws or bolts, whose diameter matches the positioning hole 134, and after passing through the positioning hole 134, they may be combined with screw holes (not shown) on the lower surface of the carrier to fix the light source assembly to the carrier.

[0046] Since plant growth lamps are generally used in a suspended manner and illuminate plants downward, in this embodiment, the carrier 11 is provided with one or more / pairs of suspension rods 19 for suspension; preferably, it can be provided with Figure 1The two pairs of suspension rods 19 shown can thereby suspend the lighting device in a balanced manner.

[0047] like Figure 3 FIG. 2 is a schematic diagram showing the exploded structure of the light source unit 20 in one embodiment.

[0048] The light source unit 20 includes a bracket 21 , a light source mounting member 22 and a lens member 23 .

[0049] Please also read Figure 4 , showing the structure of the bracket member 21; and Figure 3 Since the bracket 21 is already disposed on the housing 13, it is not shown in the figure.

[0050] The support member 21, the light source mounting member 22 and the lens member 23 may be coaxially arranged and assembled one by one.

[0051] The light source mounting member 22 may provide a bearing surface for arranging one or more light source electronic components 24, such as LED chips. In this embodiment, six light source electronic components 24 are shown, but this is only an example and is not limited thereto. The light source mounting member 22 may be made of, for example, ceramic material, and its bearing surface may be provided with a plurality of through holes for piercing the one or more pairs of power pins 25. In this embodiment, two pairs of power pins 25 are shown, but this is only an example and is not limited thereto.

[0052] The carrying surface of the light source mounting member 22 can be provided with conductive circuits by printing or arranging wire grooves, so as to conductively connect each light source electronic component 24 and each power pin 25 .

[0053] like Figure 4 As shown, the bracket member 21 is provided with a first positioning portion 211 on the side facing the light source mounting member 22, and at least one first extending portion 212 is arranged around the first positioning portion 211; the light source mounting member 22 has a second positioning portion 221 for being combined with the first positioning portion 211 in a shape-matched manner, and at least one limiting portion 222 for being combined with the at least one first extending portion 212 in a one-to-one correspondence.

[0054] Among them, Figure 4 In the figure, the first positioning portion 211 is an annular convex portion, and the second positioning portion 221 is a matching circular concave portion.

[0055] Optionally, a protrusion may be provided in the second positioning portion 221, i.e., the recess, and correspondingly, a recess cooperating with the protrusion may be provided in the first positioning portion 211, and the combination of the two can realize the functions of foolproofing and positioning (lateral movement positioning and rotation restriction in certain directions).

[0056] The combination of the first extension portion 212 and the limiting portion 222 can position the lateral movement and rotation of the light source mounting component 22, but it should be noted that in other embodiments, the first extension portion 212 and the limiting portion 222 are not necessary. For example, the lateral positioning can be achieved only by the combination of the first positioning portion 211 and the second positioning portion 221 (when the sizes of the first positioning portion 211 and the second positioning portion 221 match as shown in the figure), and the rotation of the light source mounting component 22 can be limited by the concave-convex matching structure between the light source mounting component 22 and the bracket component 21 (which can be between the first positioning portion 211 and the second positioning portion 221), which can also achieve the same positioning effect on the light source mounting component 22 as the combination of the first extension portion 212 and the limiting portion 222. For example, the first positioning portion 211 and the second positioning portion 221 are a combination of two concave and convex portions with non-circular cross-sections, such as square or other shapes.

[0057] It should be noted that, although in this embodiment the first positioning portion 211 is a convex portion and the second positioning portion 221 is a concave portion, they can of course be interchangeable in other embodiments and are not limited to this embodiment.

[0058] And if Figure 3 As shown, in this embodiment, the structure of the light source mounting member 22 includes: a main body 223 and at least two protruding structures 224. The main body 223 is cylindrical in this embodiment, and of course it can be other shapes in other embodiments, such as a cuboid, etc. The main body 223 can be provided with a bearing surface for placing the light source electronic component 24.

[0059] The at least two protruding structures 224 are of course eight in number in the present embodiment, and the number can be changed according to actual needs; each of the protruding structures 224 is at least two protruding structures 224 arranged at circumferential intervals along the side surface of the main body 223, and the limiting portion 222 is formed at the intervals between the protruding structures 224, and the limiting portion 222 is preferably open at both ends; of course, the limiting portion 222 is not limited to the structure provided in the present embodiment, and can be changed according to needs.

[0060] Optionally, when there are more than two protruding structures 224 shown in the figure, one or more through-portions 225 with air connected at both ends may be formed between the protruding structures 224 to serve as heat dissipation airflow channels, and the through-portions 225 may be through-portions 225 to facilitate the up-and-down convection of hot and cold air, thereby enhancing the heat dissipation effect. It should be noted that the through-portions 225 may also be formed by the hollow interior of the protruding structure 224, and are not limited to the figure.

[0061] Optionally, in order to further enhance the heat dissipation effect, at least a portion of the outer surface of the light source mounting member 22 is formed with uneven wrinkles, thereby increasing the heat dissipation area.

[0062] The lens member 23 is used to cover the outside of the bearing surface of the light source mounting member 22 carrying the light source electronic component 24, and is used to control the light distribution of the light emitted by the light source electronic component 24. Optionally, in order to provide the light source electronic component 24 with sealed protection, a sealing ring 26 is provided between the lens member 23 and the light source mounting member 22, which is used to seal the light source electronic component 24 between the lens member 23 and the light source mounting member 22 relative to the outside, so as to achieve the purpose of dustproof and waterproof.

[0063] The support member 21 and the lens member 23 can be positioned and connected to clamp the light source mounting member 22 therebetween to achieve longitudinal positioning, thereby fixing the position of the light source mounting member 22 .

[0064] In this embodiment, the positioning connection is a snap-fit ​​connection; in other embodiments, it may also be an adhesive connection or other connections. The snap-fit ​​connection can achieve a detachable connection between the bracket component 21 and the lens component 23.

[0065] exist Figure 3 and Figure 4 In the embodiment of the present invention, the snap connection is achieved by snapping together a first snapping portion 213 provided on the bracket member 21 and a second snapping portion 231 provided on the lens member 23 .

[0066] In this embodiment, the lens component 23 is provided with a second extension portion 232 for combining with the limiting portion 222, and the second clamping portion 232 is provided on the second extension portion 232; the first extension portion 212 and the second extension portion 232 are respectively combined with part of the limiting portion 222, that is, for example, in this embodiment, the first extension portion 212 enters the limiting portion 222 from one end, and the second extension portion 232 enters the limiting portion 222 from the other end, so that the relative positions of the lens component 23, the light source mounting component 22 and the bracket component 21 are all positioned laterally, and are longitudinally positioned in cooperation with the clamping of the first clamping portion 213 and the second clamping portion 231, so as to fix the relative position relationship of the three.

[0067] In this embodiment, the first engaging portion 213 includes: a hook portion 2131 located on the peripheral side of the bracket 21 and protruding inwardly; and a stopper 2132 disposed opposite to the hook portion 2131. The second engaging portion 231 is a buckle portion.

[0068] Among them, a gap 2133 is formed between the hook portion 2131 and the blocking portion 2132 for the second engaging portion 231, i.e., the buckle portion, to be inserted and engaged with the hook portion 2131. Optionally, the hook portion 2131 has a guide surface A (such as an inclined surface or a curved surface) inclined toward the gap 2133; the blocking portion 2132 and / or the hook portion 2131 may have a certain elastic deformation space or be movable so that the gap width is adjustable, and the gap opening 2133 may be adjusted to a width sufficient to allow the second engaging portion 231 provided on the lens component 23 to enter (for example, the guiding surface A of the hook portion is squeezed to cause it to elastically deform and thus open the gap opening 2132), and then elastically recover after entering to reduce its width to be smaller than the width of the second engaging portion 231, so as to limit the second engaging portion 231 in the gap by the hook portion.

[0069] In summary, the lighting device of the present application includes: a carrier, provided with a circuit adapter component for connecting an external power source; the circuit adapter component is provided with at least one first plug-in portion; at least one light source assembly, which includes: a housing, formed with a first accommodating portion and a second accommodating portion; one or more light source units, arranged in the first accommodating portion; each of the light source units has one or more pairs of power pins; a driving circuit component, arranged in the second accommodating portion, which includes: a second plug-in portion for positioning and conductively connecting with the first plug-in portion; the driving circuit component is used to convert the external power supply into power supply for the light source unit; a conductive member, provided with a through hole for inserting each power pin, and conductively contacting with each electrical connection pin; the conductive member and the driving circuit component can be conductively connected, so as to be conductively connected with the second plug-in portion through the driving circuit component. The lighting device of the present application can be used for plant growth lamps, and each light source unit is independent of each other. In the event of damage, each light source unit can be replaced separately, solving the problems of the prior art.

[0070] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A lighting device, characterized in that: include: A carrier having a circuit switching component for connecting to an external power source; The circuit switching component is provided with at least one first plug-in portion; The carrier is provided with one or more / pair of suspension rods for suspension; At least one light source assembly comprising: The housing is formed with a first receiving portion and a second receiving portion; the housing is formed with a third receiving portion for coupling with the conductive member in a shape matching manner; One or more light source units are disposed in the first receiving portion; each of the light source units has one or more pairs of power pins; The driving circuit component is arranged in the second accommodating portion, and comprises: a second plug-in portion for being positioned and conductively connected to the first plug-in portion; the driving circuit component is used to convert the external power supply into power supply for the light source unit; the circuit adapter component is provided with a plurality of first plug-in portions along its length direction, so as to be respectively plugged with the second plug-in portions of the plurality of light source assemblies; The conductive member is provided with through holes for inserting each power pin and can be in conductive contact with each electrical connection pin; the conductive member and the drive circuit component can be conductively connected to each other, so as to be conductively connected to the second plug-in portion through the drive circuit component.

2. The lighting device according to claim 1, characterized in that include: At least one screw lock component is used to penetrate at least one positioning hole provided in the shell and is screwed and fixed to the connecting body.

3. The lighting device according to claim 1, characterized in that: The length direction of the carrier is consistent with the length direction of the circuit switching component, and a fourth accommodating portion for combining with the circuit switching component in a shape matching manner is provided in the carrier.

4. The lighting device according to claim 1, characterized in that The light source unit comprises: A bracket, placed on the lighting device, having a first positioning portion; A light source mounting member having a second positioning portion for being coupled with the first positioning portion in a shape-matched manner; the light source mounting member having a bearing surface for arranging light source electronic components; The lens component covers the bearing surface and is positioned and connected with the bracket component.

5. The lighting device according to claim 4, characterized in that: include: One end of the one or more pairs of power pins is electrically connected to the light source electronic component, and the other end thereof passes through the bracket component and the light source mounting component and is exposed.

6. The lighting device according to claim 4, characterized in that: The support member is provided with at least one first extending portion extending toward the lens member around the first positioning portion, and the light source mounting member is provided with at least one limiting portion for one-to-one combination with the at least one first extending portion.

7. The lighting device according to claim 6, characterized in that The first extension portion is a convex body extending toward the lens component, and the limiting portions are respectively located on the outer surface of the light source mounting component and are grooves that cooperate with the convex body.

8. The lighting device according to claim 6, characterized in that The light source mounting member comprises: a subject; and At least two protruding structures are arranged at intervals along the circumferential direction of the side surface of the main body, and the limiting portion is formed at the interval between the protruding structures.

9. The lighting device according to claim 6, characterized in that: The lens component is provided with a second extension portion for combining with the limiting portion, and the first extension portion and the second extension portion are respectively combined with a portion of the limiting portion.

10. The lighting device according to claim 4 or 9, characterized in that: The positioning connection is a snap-fit ​​connection; the bracket component is provided with a first snap-fit ​​portion; the lens component is provided with a second snap-fit ​​portion for snap-fitting with the first snap-fit ​​portion.

11. The lighting device according to claim 10, characterized in that The first engaging portion is disposed on the first extending portion, and the second engaging portion is disposed on the second extending portion.

12. The lighting device according to claim 10, characterized in that The first engaging portion and the second engaging portion are respectively one and the other of a hook portion and a buckle portion engaged with the hook portion.

13. The lighting device according to claim 12, characterized in that The engagement method of the first engaging portion and the second engaging portion includes any one of the following: 1) The first engaging portion is a hook portion located on the peripheral side of the bracket and protruding outward, and is engaged with the second engaging portion located on the outer side thereof; 2) The first engaging portion includes: a hook portion located on the peripheral side of the bracket and protruding inward; and a blocking portion arranged opposite to the hook portion; wherein a gap is formed between the hook portion and the blocking portion for the buckle portion to be inserted and engaged with the hook portion; and the width of the gap is adjustable to limit the buckle portion within the gap.

14. The lighting device according to claim 1, characterized in that The lighting device is a plant growth lamp.

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