A lighting fixture

Abstract

The present invention is applicable to the field of lighting technology and provides a lighting fixture, comprising: a heat dissipation housing with a hollow inner structure; a lamp holder sleeved outside one end of the heat dissipation housing; a driving component inserted into the heat dissipation housing; a light source component accommodated in the heat dissipation housing and electrically connected to the driving component; a lamp shade having an opening at one end; a fixing nut with a hollow inner structure and disposed in the opening of the lamp shade; and a fixing screw with a hollow inner structure, one end of which is threadedly connected to the fixing nut and the other end is connected to the inside of the end of the heat dissipation housing away from the lamp holder; after the fixing nut and the fixing screw are threadedly connected, the edge portion of the opening of the lamp shade is clamped between the fixing nut and the fixing screw. By designing the fixing screw and the fixing nut and realizing the connection between the lamp shade and the heat dissipation housing through the mutual cooperation of the fixing screw, the fixing nut, the lamp shade and the heat dissipation housing, the structure of the present invention is stable and can effectively prevent the risk of the lamp shade falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting, and particularly to a lighting fixture. Background Art

[0002] Please refer to Figure 1 , the existing LED lamp mainly consists of components such as a lamp cover 50', a light source board 40', a driver board 30', a heat dissipation housing 10', a lamp base 20' and a thumbtack 60'. The light source board 40' and the driver board 30' are fixed inside the heat dissipation housing 10'. The thumbtack 60' passes through the bottom of the lamp base 20' and is fixed on the lamp base 20'. The lamp base 20' is fixed on the heat dissipation housing 10' by fixture riveting. The lamp cover 50' is directly assembled on the heat dissipation housing 10'. Glue is evenly applied at the joint between the lamp cover 50' and the heat dissipation housing 10'. The lamp cover 50' is fixed on the heat dissipation housing 10' by glue. This way of fixing the lamp cover 50' with glue is unstable. When the lamp cover 50' is heavy or the contact surface between the lamp cover 50' and the heat dissipation housing 10' is small, the lamp cover 50' has a risk of falling off. Moreover, this risk is unacceptable. Summary of the Invention

[0003] An object of the present invention is to provide a lighting fixture, aiming to solve the technical problem that the existing lamp cover has a risk of falling off.

[0004] The present invention is implemented as follows. A lighting fixture includes:

[0005] A heat dissipation housing, having an inner hollow structure;

[0006] A lamp base, sleeved outside one end of the heat dissipation housing;

[0007] A drive assembly, inserted into the heat dissipation housing;

[0008] A light source assembly, accommodated in the heat dissipation housing and electrically connected to the drive assembly;

[0009] A lamp cover, having an opening at one end;

[0010] A fixing nut, having an inner hollow structure and disposed in the opening of the lamp cover; and

[0011] A fixing screw rod, having an inner hollow structure, one end of which is threadedly connected to the fixing nut, and the other end is connected to the inside of the end of the heat dissipation housing away from the lamp base;

[0012] After the fixing nut and the fixing screw rod are threadedly connected, the edge part of the opening of the lamp cover is clamped between the fixing nut and the fixing screw rod.

[0013] In one embodiment, the fixing nut includes:

[0014] A first main body portion is provided with a first through hole along its height direction, and internal threads are provided on the hole wall of the first through hole; and

[0015] An abutting portion is connected to opposite sides of the first main body portion, and a first abutting surface is formed by connecting the side surface of the abutting portion and the side surface of the first main body portion;

[0016] A second abutting surface is formed on the inner wall at the opening of the lamp cover, the second abutting surface is adapted to the first abutting surface, and external threads matching the internal threads are provided on the outer surface of the fixing screw.

[0017] In one embodiment, along the circumferential direction of the first main body portion, the side surfaces of the other opposite sides of the first main body portion are both vertical surfaces, and the vertical distance between the two opposite vertical surfaces is less than the opening diameter of the lamp cover.

[0018] In one embodiment, the fixing screw includes:

[0019] A second main body portion is provided with a second through hole along its height direction, and the external threads are provided on the outer side surface of the second main body portion;

[0020] An annular portion is sleeved outside one end of the second main body portion away from the fixing nut; and

[0021] A plurality of external buckles are connected to the outside of the annular portion along the circumferential direction of the annular portion;

[0022] The heat dissipation component housing is provided with a third through hole along its height direction. On the hole wall of one end of the third through hole connected to the fixing screw, a first step is provided along the circumferential direction, and a plurality of internal buckles located above the first step and corresponding to the external buckles one by one. When the fixing screw is connected to the heat dissipation component housing, the external buckles abut between the corresponding internal buckles and the first step.

[0023] In one embodiment, the external buckle includes:

[0024] A horizontal portion is arranged horizontally and is fixedly connected to the annular portion; and

[0025] A vertical portion is arranged vertically and is connected to one end of the horizontal portion away from the annular portion, and the vertical portion extends towards the direction close to the second main body portion;

[0026] When the fixing screw is connected to the heat dissipation component housing, the vertical portion abuts between the corresponding internal buckle and the first step.

[0027] In one embodiment, a limiting bone extends towards the direction close to the second main body portion on the vertical portion of at least one of the external buckles.

[0028] In one embodiment, an adhesive layer is provided between the outer buckle and the corresponding inner buckle.

[0029] In one embodiment, the fixing screw further includes an annular boss connected to one end of the annular portion away from the second main body portion. The diameter of the annular boss is greater than the diameter of the second main body portion and less than the diameter of the annular portion. The annular boss is used to tightly abut against the light source assembly.

[0030] In one embodiment, the light source assembly includes a substrate and a plurality of LED light sources arranged on one side of the substrate close to the lamp shade. A second step is provided on the hole wall of the third through hole in the circumferential direction. The second step is located on the side of the first step away from the inner buckle. The edge of the substrate abuts against the second step. The driving assembly is inserted into one end of the third through hole away from the inner buckle and is located below the substrate.

[0031] In one embodiment, the plurality of LED light sources are arranged in a ring on the substrate, and a first through hole and a second through hole are provided in the central area of the substrate.

[0032] Implementing a lamp of the present invention has the following beneficial effects: By designing a fixing screw and a fixing nut, and through the mutual cooperation of the fixing screw, the fixing nut, the lamp shade and the heat dissipation housing, the connection between the lamp shade and the heat dissipation housing is realized. Specifically, the fixing nut is arranged in the opening of the lamp shade. One end of the fixing screw is threadedly connected to the fixing nut, and the other end is connected to the inside of one end of the heat dissipation housing away from the lamp socket. After the fixing nut and the fixing screw are threadedly connected, the edge portion of the opening of the lamp shade is clamped between the fixing nut and the fixing screw. This structure is stable and can effectively prevent the risk of the lamp shade falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0034] Figure 1 is an exploded schematic view of an existing lamp;

[0035] Figure 2 is an exploded schematic view of the lamp provided by the embodiment of the present invention;

[0036] Figure 3 is a longitudinal sectional structural schematic view of the lamp provided by the embodiment of the present invention;

[0037] Figure 4 isFigure 3 Enlarged schematic view of area A;

[0038] Figure 5 Schematic three-dimensional structure diagram of the lamp shade and fixing nut of the lamp provided by the embodiment of the present invention;

[0039] Figure 6 Schematic cross-sectional structure diagram of the assembled lamp shade and fixing nut of the lamp provided by the embodiment of the present invention;

[0040] Figure 7 Schematic three-dimensional structure diagram of the lamp shade, fixing nut and fixing screw of the lamp provided by the embodiment of the present invention;

[0041] Figure 8 Schematic cross-sectional structure diagram of the assembled lamp shade, fixing nut and fixing screw of the lamp provided by the embodiment of the present invention;

[0042] Figure 9 Schematic three-dimensional structure diagram of the fixing nut provided by the embodiment of the present invention;

[0043] Figure 10 Schematic three-dimensional structure diagram of the fixing screw provided by the embodiment of the present invention;

[0044] Figure 11 Schematic three-dimensional structure diagram of the heat dissipation component housing provided by the embodiment of the present invention;

[0045] Figure 12 Schematic three-dimensional structure diagram of the light source assembly provided by the embodiment of the present invention.

[0046] The label details involved in the above-mentioned drawings are as follows:

[0047] 10'- Heat dissipation component housing; 20'- Lamp socket; 30'- Driver board; 40'- Light source board; 50'- Lamp shade; 60'- Thumbtack;

[0048] 10 - Heat dissipation component housing; 101 - Third through hole; 102 - First step; 103 - Inner buckle; 104 - Second step; 20 - Lamp socket; 30 - Driver assembly; 40 - Light source assembly; 41 - Substrate; 411 - First through hole; 412 - Second through hole; 413 - Protrusion; 42 - LED light source; 50 - Lamp shade; 501 - Second abutting surface; 60 - Thumbtack; 70 - Fixing nut; 71 - First main body part; 711 - Internal thread; 72 - Abutting part; 701 - First abutting surface; 702 - First through hole; 703 - Vertical surface; 80 - Fixing screw; 801 - Second through hole; 81 - Second main body part; 811 - External thread; 82 - Annular part; 83 - External buckle; 831 - Horizontal part; 832 - Vertical part; 833 - Limiting rib; 84 - Annular boss; 100 - Lamp. Detailed implementation manners

[0049] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. 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.

[0050] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly located on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The orientations or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positions shown in the accompanying drawings, and are only for convenience of description and should not be construed as limitations to the technical solution of the present application. The terms "first" and "second" are only used for convenience of description purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0051] In order to illustrate the technical solutions described in the present invention, the following will be described in detail with reference to specific accompanying drawings and embodiments.

[0052] Please refer to Figures 2 to 4 together. An embodiment of the present invention provides a lamp 100, which includes a heat dissipation housing 10, a lamp base 20, a driving component 30, a light source component 40, a lamp shade 50, a fixing nut 70, and a fixing screw 80. Among them, the heat dissipation housing 10 has a hollow structure inside and both ends have openings; the lamp base 20 is sleeved outside one end of the heat dissipation housing 10; the driving component 30 is inserted into the heat dissipation housing 10; the light source component 40 is accommodated in the heat dissipation housing 10 and is electrically connected to the driving component 30; one end of the lamp shade 50 has an opening; the fixing nut 70 has a hollow structure inside and both ends have openings, and the fixing nut 70 is disposed in the opening of the lamp shade 50; the fixing screw 80 has a hollow structure inside and both ends have openings, one end of the fixing screw 80 is threadedly connected to the fixing nut 70, and the other end is connected to the inside of the end of the heat dissipation housing 10 away from the lamp base 20. After the fixing nut 70 and the fixing screw 80 are threadedly connected, the edge portion of the opening of the lamp shade 50 is clamped between the fixing nut 70 and the fixing screw 80. In this embodiment, the light emitted by the light source component 40 passes through the fixing screw 80 and then reaches inside the lamp shade 50, and then is emitted through the lamp shade 50.

[0053] In specific applications, the lamp 100 may further include a thumbtack 60. The thumbtack 60 passes through the bottom of the lamp base 20 and is fixed on the lamp base 20, and the lamp base 20 is fixed on the heat dissipation housing 10 by riveting with a jig. In addition, the lamp shade 50 includes, but is not limited to, a glass lamp shade.

[0054] Please combine with Figures 5 to 8 The assembly process of the lamp 100 provided by the embodiment of the present invention is as follows: First, vertically penetrate the fixing nut 70 into the lamp cover 50 from the opening of the lamp cover 50, and place the fixing nut 70 horizontally, and then fix the fixing nut 70 at the opening of the lamp cover 50 through a jig; then screw the fixing screw 80 onto the fixing nut 70 inside the lamp cover 50. At this time, it is necessary to stably fix the fixing nut 70 through a jig. After assembly, the fixing nut 70, the lamp cover 50, and the fixing screw 80 are fixedly connected together; finally, loosen the jig and connect the fixing screw 80 to the heat dissipation housing 10, that is, complete the assembly of the lamp 100. In this assembly process, the heat dissipation housing 10, the lamp base 20, the driving component 30, the light source component 40, and the thumbtack 60 are assembled in advance according to the existing method.

[0055] Currently, the lamp cover 50 and the heat dissipation housing 10 are fixedly connected together by glue, and their connection is unstable. Especially when the lamp cover 50 is heavy or the contact surface between the lamp cover 50 and the heat dissipation housing 10 is small, the lamp cover 50 has a risk of detachment. Moreover, this risk may cause personal injury accidents, which is unacceptable. This embodiment provides a completely different connection method between the lamp cover 50 and the heat dissipation housing 10. It realizes the connection between the lamp cover 50 and the heat dissipation housing 10 by designing the fixing screw 80 and the fixing nut 70 and through the mutual cooperation of the fixing screw 80, the fixing nut 70, the lamp cover 50, and the heat dissipation housing 10. Specifically, the fixing nut 70 is arranged inside the opening of the lamp cover 50. One end of the fixing screw 80 is threadedly connected to the inside of the fixing nut 70, and the other end is connected to the inside of the end of the heat dissipation housing 10 away from the lamp base 20. After the fixing nut 70 and the fixing screw 80 are threadedly connected, the edge part of the opening of the lamp cover 50 is clamped between the fixing nut 70 and the fixing screw 80. This structure is stable and can effectively prevent the risk of the lamp cover 50 falling off.

[0056] In one embodiment, please combine with Figure 9 The fixing nut 70 includes a first main body portion 71 and an abutting portion 72. Among them, the first main body portion 71 is generally columnar, and a first through hole 702 is opened along its height direction, that is, the first through hole 702 penetrates the first main body portion 71 along the height direction of the first main body portion 71. The height direction described in this embodiment refers to along Figure 3The longitudinal direction in it. The abutting portions 72 are fixedly connected to opposite sides of the first main body portion 71, that is, the abutting portions 72 are fixedly connected to opposite sides of the first main body portion 71, and the abutting portions 72 are used to abut against the inner wall at the opening of the lamp cover 50. Specifically, the side surface of the abutting portion 72 and the side surface of the first main body portion 71 are connected to form a first abutting surface 701, and a second abutting surface 501 is formed on the inner wall at the opening of the lamp cover 50. The second abutting surface 501 is adapted to the first abutting surface 701, and the shapes of the first abutting surface 701 and the second abutting surface 501 are the same, so that the fixing nut 70 and the lamp cover 50 are tightly fitted. Preferably, the cross-sectional shapes of the first abutting surface 701 and the second abutting surface 501 along the longitudinal direction both include an arc segment protruding and bending outward from the lamp cover 50, an arc segment protruding and bending inward from the lamp cover 50, and a straight segment, wherein the straight segment is arranged in the vertical direction.

[0057] Further preferably, the abutting portion 72 and the first main body portion 71 are integrally formed to facilitate simplifying the structure and saving costs.

[0058] In this embodiment, an internal thread 711 is provided on the inner wall of the first through hole 702. Correspondingly, an external thread 811 is provided on the outer surface of the fixing screw 80, and the external thread 811 is in threaded connection with the internal thread 711, thereby realizing the threaded connection between the fixing nut 70 and the fixing screw 80.

[0059] In one embodiment, in order to facilitate inserting the fixing nut 70 into the lamp cover 50, the opening of the lamp cover 50 is circular. Along the circumferential direction of the first main body portion 71, the other two opposite side surfaces of the first main body portion 71 are both set as vertical surfaces 703, and the vertical distance between the two opposite vertical surfaces 703 is less than the opening diameter of the lamp cover 50, so that the fixing nut 70 can be vertically inserted into the lamp cover 50 from the opening of the lamp cover 50. In specific applications, the first main body portion 71 and the abutting portion 72 can be integrally formed, and the abutting portion 72 is arranged along the circumferential direction of the first main body portion 71, and then the abutting portions 72 on the opposite sides of the first main body portion 71 are cut off, thereby forming two vertical surfaces 703. The uncut abutting portions 72 on the opposite sides of the first main body portion 71 are the above-mentioned abutting portions 72 that abut against the inside of the lamp cover 50.

[0060] In one embodiment, please refer to Figure 10 and Figure 11 ., the fixing screw 80 includes a second main body portion 81, an annular portion 82, and a plurality of external buckles 83. Among them, the second main body portion 81 is generally cylindrical, and a second through hole 801 is provided along its height direction, that is, the second through hole 801 penetrates the second main body portion 81 along the height direction of the second main body portion 81. The height direction described in this embodiment refers to along Figure 3The longitudinal direction in it. The annular part 82 is sleeved outside one end of the second main body part 81 far away from the fixing nut 70. A plurality of external buckles 83 are connected to the outside of the annular part 82 along the circumferential direction of the annular part 82, and the plurality of external buckles 83 are arranged at intervals.

[0061] In order to cooperate with the fixing screw 80, the heat sink housing 10 is provided with a third through hole 101 along its height direction, that is, the third through hole 101 penetrates the heat sink housing 10 along the height direction of the heat sink housing 10. And, a first step 102 is arranged on the hole wall at one end of the third through hole 101 connected to the fixing screw 80 along its circumferential direction. At the same time, a plurality of internal buckles 103 are arranged on the hole wall at one end of the third through hole 101 connected to the fixing screw 80 along its circumferential direction. The internal buckle 103 is located above the first step 102 and corresponds to the external buckle 83 one by one. Among them, both the internal buckle 103 and the external buckle 83 are arc-shaped. When the fixing nut 70 is connected to the heat sink housing 10, the external buckle 83 abuts between the corresponding internal buckle 103 and the first step 102.

[0062] Preferably, the second main body part 81, the annular part 82 and the plurality of external buckles 83 are integrally formed to facilitate simplifying the structure and saving costs.

[0063] In this embodiment, the above-mentioned external thread 811 is provided on the outer side surface of the second main body part 81. The external thread 811 is in threaded connection with the internal thread 711 on the hole wall of the first through hole 702, thereby realizing the threaded connection between the fixing nut 70 and the fixing screw 80. Preferably, on the outer side surface of the second main body part 81, the external thread 811 is distributed in a multi-segment manner, such as a three-segment distribution, that is, the external thread 811 is divided into three intervals along the circumferential direction of the second main body part 81.

[0064] Further preferably, three external buckles 83 are uniformly arranged along the circumferential direction at one end of the annular part 82 far away from the second main body part 81, and the three external buckles 83 are arranged at intervals. Correspondingly, three internal buckles 103 are uniformly arranged along the circumferential direction on the hole wall at one end of the third through hole 101 connected to the fixing screw 80, and the three internal buckles 103 are arranged at intervals. When the fixing screw 80 is inserted into the heat sink housing 10, it can be inserted in any direction without the need to align the relative positions of the external buckle 83 and the internal buckle 103, improving the assembly efficiency; and, after the fixing screw 80 is inserted into the heat sink housing 10, the lower end surface of the external buckle 83 abuts on the first step 102, and then the fixing screw 80 is rotated, and the external buckle 83 can be screwed into the space defined between the internal buckle 103 and the first step 102, thereby realizing the connection between the fixing screw 80 and the heat sink housing 10. Of course, in other embodiments, the number of the external buckles 83 and the internal buckles 103 can be other values, not limited to this.

[0065] In one embodiment, please combine Figure 10 andFigure 11 , the outer buckle 83 includes a horizontal portion 831 and a vertical portion 832. Among them, the horizontal portion 831 is horizontally arranged and fixedly connected to the annular portion 82; the vertical portion 832 is vertically arranged and connected to one end of the horizontal portion 831 away from the annular portion 82, and the vertical portion 832 extends in the direction close to the second main body portion 81, that is, the vertical portion 832 extends upward. When the fixing screw 80 is connected to the heat dissipation part housing 10, the vertical portion 832 of the outer buckle 83 abuts between the corresponding inner buckle 103 and the first step 102. In this embodiment, due to the existence of the horizontal portion 831, there is a gap between the outer side surface of the annular portion 82 and the first step 102, so as to facilitate the heat dissipation of the light source assembly 40 below the fixing screw 80.

[0066] In one embodiment, please refer to Figure 10 , on the vertical portion 832 of at least one of the outer buckles 83, a limiting bone 833 extends in the direction close to the second main body portion 81, that is, the limiting bone 833 extends upward. In this embodiment, the limiting bone 833 is a convex protrusion extending upward. The purpose of setting the limiting bone 833 is to limit the outer buckle 83 on the fixing screw 80 within the heat dissipation part housing 10. In specific applications, the limiting bone 833 can be set on any one of the outer buckles 83, or on any two of the outer buckles 83, or on all three outer buckles 83.

[0067] In one embodiment, in order to prevent the fixing screw 80 from rotating during transportation and use, an adhesive layer is provided between the outer buckle 83 and the corresponding inner buckle 103. The adhesive layer is formed by arranging a small amount of glue between the outer buckle 83 and the inner buckle 103, thereby preventing the lamp cover 50 from rotating during transportation and use.

[0068] In one embodiment, please refer to Figure 4 and Figure 10 , the fixing screw 80 further includes an annular boss 84 connected to one end of the annular portion 82 away from the second main body portion 81. The diameter of the annular boss 84 is larger than the diameter of the second main body portion 81 and smaller than the diameter of the annular portion 82. The annular boss 84 is used to abut against the light source assembly 40 to fix the light source assembly 40 within the heat dissipation part housing 10.

[0069] Preferably, the annular boss 84, the second main body portion 81, the annular portion 82 and the outer buckle 83 are integrally formed, so as to simplify the structure and save costs.

[0070] In one embodiment, please refer to Figure 11 and Figure 12, the light source assembly 40 includes a substrate 41 and a plurality of LED light sources 42. Among them, the plurality of LED light sources 42 are arranged on one surface of the substrate 41 close to the lamp shade 50, and the LED light sources 42 are used to emit light. To facilitate the assembly of the light source assembly 40, a second step 104 is provided on the hole wall of the third through hole 101 of the heat dissipation housing 10 along the circumferential direction. The second step 104 is located on the side of the first step 102 away from the internal buckle 103, and the inner diameter of the second step 104 is smaller than the inner diameter of the first step 102. During assembly, the edge of the substrate 41 abuts against the end surface of the second step 104, and is abutted against the substrate 41 through the annular boss 84, thereby fixing the substrate 41 in the heat dissipation housing 10. In addition, the driving assembly 30 is inserted into one end of the third through hole 101 away from the internal buckle 103 and is located below the substrate 41. In a specific application, the driving assembly 30 mainly includes a driving circuit board and electronic components arranged on the driving circuit board.

[0071] In one embodiment, please refer to Figure 12 , the plurality of LED light sources 42 are arranged in a ring on the substrate 41, and a first through hole 411 and a second through hole 412 are formed in the central area of the substrate 41. The first through hole 411 and the second through hole 412 penetrate the substrate 41 along the thickness direction of the substrate 41. In this embodiment, the first through hole 411 and the second through hole 412 are located in the annular area surrounded by the plurality of LED light sources 42. The first through hole 411 is generally square and is used to accommodate the connection terminals of the light source assembly 40; the second through hole 412 is generally square and is used to accommodate the induction module small card.

[0072] Preferably, a plurality of protrusions 413 are arranged at intervals along the circumferential direction of the edge of the substrate 41. Part of the protrusions 413 are the split plates of the substrate 41. When actually produced and applied, the substrate 41 is mass-produced. At first, a plurality of substrates 41 are spliced together, and each adjacent two substrates 41 are connected to each other through the protrusions 413. The connection parts between the protrusions 413 are pre-micro-cut to facilitate the separation and splitting of the substrates 41 during the assembly process.

[0073] In one embodiment, the fixing nut 70 and the fixing screw 80 are both milky white or made of transparent materials to prevent shadows from appearing at the opening of the lamp shade 50.

[0074] The above are only the optional embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lighting fixture, characterized in that, Comprising: A heat dissipation component housing, having an inner hollow structure; A lamp holder, sleeved outside one end of the heat dissipation component housing; A driving component, inserted into the heat dissipation component housing; A light source component, accommodated in the heat dissipation component housing and electrically connected to the driving component; A lamp cover, having an opening at one end; A fixing nut, having an inner hollow structure and arranged in the opening of the lamp cover; And A fixing screw rod, having an inner hollow structure, one end of which is threadedly connected into the fixing nut and the other end is connected into one end of the heat dissipation component housing far from the lamp holder; After the fixing nut and the fixing screw rod are threadedly connected, the edge part of the opening of the lamp cover is clamped between the fixing nut and the fixing screw rod; A first main body part, having a first through hole opened along its height direction, and an internal thread is provided on the hole wall of the first through hole; and An abutting part, connected to opposite sides of the first main body part, and a side surface of the abutting part and a side surface of the first main body part are connected to form a first abutting surface; A second abutting surface is formed on the inner wall at the opening of the lamp cover, the second abutting surface is adapted to the first abutting surface, and an external thread matched with the internal thread is provided on the outer surface of the fixing screw rod; A second main body part, having a second through hole opened along its height direction, and the external thread is provided on the outer side surface of the second main body part; An annular part, sleeved outside one end of the second main body part far from the fixing nut; and A plurality of external buckles, connected to the outside of the annular part along the circumferential direction of the annular part; a limiting bone is extended in the direction close to the second main body part on the vertical part of the external buckle, and the limiting bone is a convex part extending upward; A third through hole is opened along the height direction of the heat dissipation component housing, a first step is arranged on the hole wall at one end of the third through hole connected to the fixing screw rod along the circumferential direction, and a plurality of internal buckles corresponding to the external buckles one by one and located above the first step, when the fixing screw rod is connected with the heat dissipation component housing, the external buckle abuts between the corresponding internal buckle and the first step; The fixing screw rod further includes an annular boss connected to one end of the annular part far from the second main body part, the diameter of the annular boss is larger than the diameter of the second main body part and smaller than the diameter of the annular part, and the annular boss is used for tightly abutting the light source component.

2. The luminaire according to claim 1, characterized in that, Along the circumferential direction of the first main body part, the side surfaces of the other opposite two sides of the first main body part are both vertical surfaces, and the vertical distance between the two opposite vertical surfaces is smaller than the opening diameter of the lamp cover.

3. The luminaire according to claim 1, wherein The external buckle includes: A horizontal part, arranged horizontally and fixedly connected with the annular part; and A vertical part, arranged vertically and connected to one end of the horizontal part far from the annular part, and the vertical part extends in the direction close to the second main body part; When the fixing screw rod is connected with the heat dissipation component housing, the vertical part abuts between the corresponding internal buckle and the first step.

4. The luminaire according to claim 1, characterized in that, An adhesive layer is arranged between the external buckle and the corresponding internal buckle.

5. The luminaire according to any one of claims 1 to 4, characterized in that, The light source assembly includes a substrate and a plurality of LED light sources arranged on one side of the substrate close to the lamp shade; a second step is provided on the hole wall of the third through hole along the circumferential direction, the second step is located on the side of the first step away from the internal buckle, and the edge of the substrate abuts against the second step; the driving assembly is inserted into one end of the third through hole away from the internal buckle and is located below the substrate.

6. The luminaire according to claim 5, characterized in that, The plurality of LED light sources are arranged in a ring on the substrate, and a first through hole and a second through hole are formed in the central area of the substrate.

Images