LED lamp

Abstract

Disclosed in the present utility model is an LED lamp. The LED lamp comprises a heat dissipation unit and a lamp cover. Axial anti-disengagement fit between the heat dissipation unit and the lamp cover is realized by means of a limiting assembly at the joint of the heat dissipation unit and the lamp cover, circumferential stop fit between the heat dissipation unit and the lamp cover is realized by means of a snap-fit assembly at the joint, and a stop member is arranged at the joint, the heat dissipation unit or the lamp cover so as to realize radial fit between the heat dissipation unit and the lamp cover. According to the present utility model, axial, circumferential, and radial limiting fit between the heat dissipation unit and the lamp cover are realized respectively by means of the limiting assembly, the snap-fit assembly, and the stop member, so that stable assembly of the heat dissipation unit and the lamp cover is ensured. The stop member can increase the strength of the opening joint, reduce the possibility that an area deforms due to stress, and ensure that the area is not prone to deformation in a drop test. The stop member has a relatively simple structure and high structural strength, so that the stop member is less likely to deform after being subjected to an external force, and the effect of increasing the structural strength at the joint of the heat dissipation unit and the lamp cover is also achieved. The arrangement of the stop member facilitates rapid assembly of the heat dissipation unit and the lamp cover, and reduces the assembly difficulty of the heat dissipation unit and the lamp cover.

Description

An LED lamp Technical Field

[0001] The utility model belongs to the technical field of LED lighting, in particular to an LED lamp. Background Art

[0002] With the continuous development of LED lights, higher requirements are placed on product quality and cost. In addition, the demand for LED lights is huge, and every process of the product is crucial.

[0003] Regarding the assembly connection of LED lampshades and heat sinks, common connection methods include: 1) using glue to achieve fixed assembly of the two, which has a high manufacturing cost and the glue is prone to produce odor and cause pollution; 2) forming convex teeth on the LED lampshade and the heat sink respectively, and using the convex teeth to clamp each other to achieve fixed assembly of the two, but this connection method will weaken the product strength or even cause deformation when the LED lamp is large or the LED lampshade is thin, causing the LED lampshade and the heat sink to fall off each other; 3) using ultrasonic method to achieve connection between the two, which has a high production cost.

[0004] Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an LED lamp, which forms a matching structure of a heat sink and a lampshade in the axial, circumferential and radial directions, and has a stable assembly and high assembly structure strength.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an LED lamp, including a radiator and a lampshade, wherein the connection between the radiator and the lampshade realizes axial anti-slip fit between the two through a limit assembly, and the connection realizes circumferential anti-rotation fit between the two through a snap-on assembly, and a stopper is provided at the connection, the radiator or the lampshade to form a radial fit between the radiator and the lampshade.

[0007] The utility model realizes axial, circumferential and radial limiting cooperation of the radiator and the lampshade respectively through the limiting assembly, the clamping assembly and the stopper, thereby ensuring the stable assembly of the radiator and the lampshade. In addition, the stopper is provided at the opening connection of the radiator and the lampshade, which can increase the strength of the opening connection, reduce the possibility of deformation of the area under stress, ensure that it will not be easily deformed during the drop test, and ensure the quality of the product.

[0008] Furthermore, the stopper is provided on the radiator, with a portion thereof extending toward the lampshade, thereby creating a space between the inner wall of the radiator and the stopper for the lampshade opening to extend into. Because the structural strength of the radiator and the lampshade opening is relatively low, the lampshade opening extends between the stopper and the radiator. When the radiator opening is squeezed by external forces, the lampshade and the stopper can counteract each other to provide stable support and restraint for the radiator, preventing it from easily deforming.

[0009] Furthermore, the barrier comprises a transverse portion connected to the inner wall of the radiator, and a vertical portion connected to the side of the transverse portion away from the inner wall of the radiator and extending toward the lampshade. The barrier structure is relatively simple, and the connection of the transverse portion to the inner wall of the radiator also increases the strength of the radiator.

[0010] Furthermore, the connection between the vertical portion and the horizontal portion forms a reinforcement portion, which can increase the structural strength of the barrier, prevent it from being easily deformed when subjected to external forces, and also play a role in increasing the structural strength of the connection between the radiator and the lampshade.

[0011] Furthermore, the outer wall of the vertical portion toward the inner wall of the radiator forms at least a first inclined guide surface, which serves as a pre-positioning function, facilitating the downward insertion of the lampshade opening between the inner wall of the radiator and the stopper, thereby reducing assembly difficulty and accelerating assembly speed.

[0012] Furthermore, a second inclined guide surface is formed on the outer side of the vertical portion facing the inner wall of the radiator. The second inclined guide surface is located between the reinforcement portion and the first inclined guide surface and has an inclination angle greater than that of the first inclined guide surface. The second inclined guide surface can further accelerate the assembly of the lampshade and the radiator based on the first inclined guide surface.

[0013] Furthermore, the inner side wall of the vertical portion facing away from the inner wall of the radiator is formed with an inclined surface to increase the thickness of the reinforcement portion. The setting of the inclined surface increases the thickness of the reinforcement portion, thereby increasing the structural strength of the stopper and facilitating demoulding during processing.

[0014] Furthermore, the stopper is at least partially corresponding to the snap-on assembly. The anti-rotation fitting structure and the radial limiting structure of the heat sink and the lampshade are correspondingly provided, making the overall fitting structure of the heat sink and the lampshade more stable. At the same time, the superposition of the two structures can increase the structural strength of the connection between the heat sink and the lampshade.

[0015] Furthermore, the stop assembly includes a first stop step provided on the inner wall of the radiator opening and a second stop step provided on the outer wall of the lampshade opening. The first stop step and the second stop step engage vertically to achieve axial anti-disengagement engagement between the radiator and the lampshade. The first stop step and the second stop step have a simple structure, and the engagement is convenient and stable.

[0016] Furthermore, the latch assembly includes a first latching tooth disposed on the inner wall of the heat sink opening and a second latching tooth disposed on the outer wall of the lampshade opening. The spacing between at least two adjacent second latching teeth matches the circumferential width of the first latching teeth. The first and second latching teeth circumferentially engage to achieve a circumferential rotation-stopping fit between the heat sink and the lampshade. The end surface of the second latching tooth forms the second limiting step. The second latching tooth plays a role in both axially preventing the heat sink and the lampshade from falling out and circumferentially preventing rotation, facilitating processing and manufacturing.

[0017] Furthermore, the snap-fit ​​assembly includes a rib positioned between the stopper and the inner wall of the heat sink, and a notch positioned at the opening of the lampshade. The rib is inserted into the notch to provide a circumferential, anti-rotational fit between the heat sink and the lampshade. The rib and notch ensure the anti-rotational fit between the heat sink and the lampshade, while the connection between the rib and the stopper also enhances the structural strength of this area.

[0018] Furthermore, the stopper is provided on the lampshade, and a portion thereof extends toward the radiator, so as to form a space between the inner wall of the lampshade and the stopper for the radiator opening to extend into. The stopper can be provided in a variety of positions to accommodate different processing structures and practical scenarios, providing greater adaptability.

[0019] Furthermore, the lampshade opening has an extension section, the outer wall of which forms a stepped structure. The heat sink opening forms a retaining edge that can abut against the stepped structure. The extension section and the retaining edge interlock internally and externally to form the connection structure between the heat sink and the lampshade. The connection structure between the lampshade and the heat sink opening is simple and stable, and also facilitates the installation of a limit assembly, a snap assembly, and a retaining member.

[0020] The beneficial effects of the present invention are as follows: the axial, circumferential and radial limiting cooperation of the radiator and the lampshade are respectively achieved through the limiting assembly, the clamping assembly and the baffle, thereby ensuring the stable assembly of the radiator and the lampshade; the baffle can increase the strength of the open connection thereof, reduce the possibility of deformation in the area due to force, ensure that it will not be easily deformed during the drop test, and ensure the quality of the product; the structure of the baffle is relatively simple and the structural strength is high, thereby avoiding easy deformation after being subjected to external force, and also increasing the structural strength of the connection between the radiator and the lampshade; the setting of the baffle facilitates the rapid assembly of the radiator and the lampshade, reducing the difficulty of assembly of the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a front view of an LED lamp in a first embodiment of the present invention.

[0022] FIG2 is a cross-sectional view taken along line OO in FIG1 .

[0023] FIG3 is an enlarged view of the structure at point A in FIG2 .

[0024] FIG4 is a planar cross-sectional view of the LED lamp in the first embodiment of the present invention.

[0025] FIG5 is an enlarged view of the structure at point B in FIG4 .

[0026] FIG6 is a three-dimensional cross-sectional view of the LED lamp in the first embodiment of the present invention.

[0027] FIG7 is an enlarged view of the structure at point C in FIG6 .

[0028] FIG8 is a schematic diagram of the three-dimensional structure of the radiator in the first embodiment of the present invention.

[0029] FIG9 is an enlarged view of the structure at point D in FIG8 .

[0030] FIG10 is a planar cross-sectional view of the radiator in the first embodiment of the present invention.

[0031] FIG11 is a top view of the radiator in the first embodiment of the present invention.

[0032] FIG12 is a schematic diagram of the three-dimensional structure of the lampshade in the first embodiment of the present invention.

[0033] FIG13 is a front view of the lampshade in the first embodiment of the present invention.

[0034] FIG14 is a planar cross-sectional view of the lampshade in the first embodiment of the present invention.

[0035] FIG15 is a schematic diagram of the three-dimensional structure of the radiator in the second embodiment of the present invention.

[0036] FIG16 is an enlarged view of the structure at point E in FIG15 .

[0037] FIG17 is a schematic diagram of the three-dimensional structure of the lampshade in the second embodiment of the present invention.

[0038] FIG18 is a three-dimensional cross-sectional view of the LED lamp in the second embodiment of the present invention.

[0039] FIG19 is an enlarged view of the structure at point F in FIG18 .

[0040] FIG20 is a schematic diagram of the three-dimensional structure of the radiator in the third embodiment of the present invention.

[0041] FIG21 is an enlarged view of the structure at point F in FIG20 .

[0042] Among them, 1-heat sink, 11-edge, 2-lampshade, 21-extension section, 22-step structure, 3-limiting assembly, 31-first limiting step, 32-second limiting step, 4-clamping assembly, 41-first latching tooth, 411-thinning portion, 42-second latching tooth, 43-convex rib, 44-notch groove, 5-stopper, 51-horizontal portion, 52-vertical portion, 53-reinforcement portion, 54-first inclined guide surface, 55-second inclined guide surface, 56-inclined surface. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0044] Example 1

[0045] As shown in Figures 1 to 14, an LED lamp includes a radiator 1 and a lampshade 2. The connection between the radiator 1 and the lampshade 2 is achieved through an axial anti-slip fit between the two by a limit assembly 3. Here, the up and down directions shown in Figure 1 are taken as the axial direction, and the connection is the area H indicated by the dotted line in Figure 1; the connection H between the radiator 1 and the lampshade 2 is achieved through a snap-fit ​​assembly 4 to prevent the circumferential rotation between the two, that is, the snap-fit ​​assembly 4 prevents the radiator 1 and the lampshade 2 from rotating relative to each other; and a stopper 5 is provided on the connection H and the radiator 1. Of course, the stopper 5 can also be provided on the lampshade 2. The function of the stopper 5 is to form a radial fit between the radiator 1 and the lampshade 2. The radial fit here means that the radiator 1 and the lampshade 2 will not undergo radial (lateral in Figure 1) displacement or radial deformation at the location where the stopper 5 is provided, or the radial displacement or radial deformation that occurs is very small and will not affect the product.

[0046] Specifically, as shown in Figure 3, in this embodiment, a stopper 5 is provided on the heat sink 1. Part of the stopper 5 extends toward the lampshade 2, thereby creating a space between the inner wall of the heat sink 1 and the stopper 5 for the opening of the lampshade 2 to extend into. After the heat sink 1 and the lampshade 2 are assembled and connected, the stopper 5 supports and restrains the lampshade 2, preventing it from shifting or deforming inward.

[0047] As shown in Figures 3, 8 and 12, in this embodiment, the lower opening of the lampshade 2 has an extension section 21, the outer wall of the extension section 21 is formed with a stepped structure 22, and the upper opening of the radiator 1 is formed with a retaining edge 11 that can resist the stepped structure 22. The above-mentioned extension section 21 is buckled with the retaining edge 11 inside and outside to form a connection H structure.

[0048] The limiting assembly 3 includes a first limiting step 31 arranged on the inner wall of the opening of the radiator 1, and a second limiting step 32 arranged on the outer wall of the opening of the lampshade 2. The first limiting step 31 and the second limiting step 32 are buckled together to achieve axial anti-slip fit between the radiator 1 and the lampshade 2.

[0049] In this embodiment, the first limiting step 31 is located on the inner wall of the retaining edge 11 of the heat sink 1. It is intermittently arranged along a circumferential circle and extends from top to bottom and from outside to inside on the side facing the center of the LED lamp (using the direction shown in Figure 10 as an example for illustration); the second limiting step 32 is located on the outer wall of the extension section 21 of the lampshade 2. It is arranged corresponding to the first limiting step 31. As shown in Figure 5, it extends from top to bottom and from outside to inside on the side facing away from the center of the LED lamp. Therefore, during assembly, the heat sink 1 and the lampshade 2 are engaged with each other, and the second limiting step 32 slides against the first limiting step 31 until the second limiting step 32 falls below the first limiting step 31 and the retaining edge 11 and the stepped structure 22 abut against each other. Of course, in other embodiments, the limiting assembly 3 can also adopt other structures to achieve axial anti-slip of the heat sink 1 and the lampshade 2, such as a hook structure, etc., which is not limited to this.

[0050] As shown in Figures 9 to 12, the snap-fit ​​assembly 4 includes a first latch 41 arranged on the inner wall of the opening of the radiator 1, and a second latch 42 arranged on the outer wall of the opening of the lampshade 2. The spacing between at least two adjacent second latches 42 is adapted to the circumferential width of the first latch 41. The first latch 41 and the second latch 42 are circumferentially engaged to achieve circumferential anti-rotation fit between the radiator 1 and the lampshade 2.

[0051] Specifically, the first latching teeth 41 are located on the inner wall of the retaining edge 11 of the heat sink 1, with multiple first latching teeth 41 interlaced with the first limiting step 31. The second latching teeth 42 are located on the outer wall of the extension section 21 of the lampshade 2, spaced apart around the opening of the lampshade 2, with the spacing between adjacent second latching teeth 42 being approximately equal to the width of the first latching teeth 41. Of course, in other embodiments, the second latching teeth 42 may not be distributed throughout the opening of the lampshade 2, but only in the areas corresponding to the first latching teeth 41, without limitation.

[0052] In particular, the upper end surface of the second latch 42 (based on the direction shown in FIG13 ) forms the above-mentioned second limiting step 32 . In other words, the second latch 42 plays a role in both the axial anti-slip and circumferential anti-rotation cooperation of the radiator 1 and the lampshade 2 .

[0053] In order to facilitate the assembly of the first latch 41 and the second latch 42, the first latch 41 forms a V-shape with the opening facing downward on the side facing the lampshade 2, and the second latch 42 forms a V-shape with the opening facing upward on the side facing the radiator 1, so that the above structure plays a guiding role, making it easier for the second latch 41 to be quickly inserted between adjacent second latches 42.

[0054] In this embodiment, the stopper 5 is arranged opposite to the clamping assembly 4 . Of course, in other embodiments, the stopper 5 is arranged opposite to part of the clamping assembly 4 , or the stopper 5 may extend around a circle of the radiator 1 .

[0055] As shown in Figures 3, 5, and 7, the stopper 5 includes a transverse portion 51 connected to the inner wall of the radiator 1, and a vertical portion 52 connected to the side of the transverse portion 51 away from the inner wall of the radiator 1 and extending toward the lampshade 2. In other words, the cross-section of the stopper 5 is L-shaped, with the open end of the transverse portion 51 connected to the inner wall of the radiator 1.

[0056] A reinforcement portion 53 is formed at the connection between the transverse portion 51 and the vertical portion 52. In this embodiment, the reinforcement portion 53 is formed by increasing the thickness of the connection between the transverse portion 51 and the vertical portion 52. The side of the reinforcement portion 53 facing the inner wall of the radiator 1 is an inclined surface.

[0057] As shown in Figure 5, the vertical portion 52 forms at least a first inclined guide surface 54 on the outer wall toward the inner wall of the radiator 1. When the extension section 21 of the lampshade 2 extends into the space between the inner wall of the radiator 1 and the baffle 5, the first inclined guide surface 54 acts as a guide to facilitate the rapid extension of the extension section 21.

[0058] Furthermore, a second inclined guide surface 55 is formed on the outer side wall of the vertical portion 52 facing the inner wall of the radiator 1 , which is located between the reinforcement portion 53 and the first inclined guide surface 54 , and has an inclination angle greater than that of the first inclined guide surface 54 .

[0059] In summary, the first inclined guide surface 54, the second inclined guide surface 55, and the reinforcement portion 53 are arranged sequentially from top to bottom. Furthermore, an inclined surface 56 is formed on the inner sidewall of the vertical portion 52, which faces away from the inner wall of the radiator 1. This inclined surface 56 extends obliquely from top to bottom and from outside to inside, thereby increasing the thickness of the reinforcement portion 53 and facilitating demoulding.

[0060] In order to ensure that the first limiting step 31 and the second limiting step 32 remain firmly engaged and avoid the detachment of the radiator 1 and the lampshade 2 due to radial displacement, even if there is space between the inner wall of the radiator 1 and the vertical part 52 of the baffle 5, the space gap is smaller than the thickness of the first limiting step 31 or the second limiting step 32.

[0061] When the radiator 1 and the lampshade 2 are assembled, the first limiting step 31 and the second limiting step 32 are engaged up and down to realize the axial anti-separation fit of the radiator 1 and the lampshade 2, that is, the radiator 1 and the lampshade 2 will not separate up and down; the first latch 41 and the second latch 42 are engaged left and right to realize the circumferential anti-rotation fit of the radiator 1 and the lampshade 2, that is, the radiator 1 and the lampshade 2 will not undergo circumferential deflection; the retaining edge 11, the extension section 21 and the vertical part 52 of the retaining member 5 realize the radial fit of the radiator 1 and the lampshade 2, that is, the radiator 1 and the lampshade 2 will not undergo radial deviation, and even if the volume of the LED lamp is increased or the thickness of the LED lamp is decreased, the H structure strength of the opening connection between the radiator 1 and the lampshade 2 is higher, and it will not be easily deformed when subjected to external force, especially in the drop test.

[0062] Example 2

[0063] As shown in Figures 15 to 19, the snap-fit ​​assembly 4 includes a rib 43 arranged between the baffle 5 and the inner wall of the radiator 1, and a notch groove 44 arranged at the opening of the lampshade 2. The rib 43 is inserted into the notch groove 44 to achieve circumferential anti-rotation fit between the radiator 1 and the lampshade 2.

[0064] In this embodiment, the notch grooves 44 are provided between adjacent second latching teeth 42 and are evenly spaced around the opening of the lampshade 2 .

[0065] The ribs 43 are connected to the inner wall of the heat sink 1, the transverse portion 51, and the vertical portion 52 of the retaining member 5, respectively, thereby enhancing overall strength. The top of the ribs 43 also forms a downward-facing V-shaped structure, and the top of the ribs 43 is higher than the top of the vertical portion 52. Of course, in other embodiments, the top of the ribs 43 can be flush with the top of the vertical portion 52, or lower than the top of the vertical portion 52, without limitation.

[0066] At this time, the structure of the blocking member 5 may be the same as that of the first embodiment, or the reinforcement structure may not be provided, and there is no specific limitation.

[0067] The other structures are the same as those in the first embodiment and will not be described in detail.

[0068] Example 3

[0069] As shown in FIG. 20 and FIG. 21 , in this embodiment, the first latching tooth 41 is provided with a thinning portion 411 , so that the wall thickness at the opening of the radiator 1 is not too thick due to the large thickness of the first latching tooth 41 , which ultimately does not cause deformation of the radiator 1 .

[0070] Each first latching tooth 41 may have a thinned portion 411 , or a plurality of first latching teeth 41 may have thinned portions 411 , and the specific number is not limited.

[0071] The other structures are the same as those in the first embodiment and will not be described in detail.

[0072] Example 4

[0073] The block 5 can be set not only on the radiator 1, but also on the lampshade 2. In this case, part of the block 5 extends toward the radiator 1, thereby forming a space between the inner wall of the lampshade 2 and the block 5 for the opening of the radiator 1 to extend into. In this case, the block 5 is located radially inward of the opening of the radiator 1.

[0074] At this time, the extension section of the lampshade 2 is located radially outside the radiator 1, and the stepped structure is located inside the extension section. The specific implementation of the limit assembly 3 and the clamping assembly 4 is the same as that of the first embodiment, except that the setting position is changed, and the details are not repeated here.

[0075] In other words, a space is formed between the outer wall of the lampshade 2 and the stopper 5 for the opening of the radiator 1 to extend into, and the stopper 5 is located radially outside the opening of the radiator 1. In this case, the extended section of the lampshade 2 is located radially inside the radiator 1, and the stepped structure is located outside the extended section.

[0076] Of course, other embodiments do not exclude the structure in which part of the blocking member 5 is located on the radiator 1 and the other part of the blocking member 5 is located on the lampshade 2 .

[0077] The above specific implementation methods are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. An LED lamp, comprising a heat sink (1) and a lampshade (2), Features: The connection between the heat sink (1) and the lampshade (2) is achieved through a limiting assembly (3) to prevent the two from axial disengagement, and the connection is achieved through a clamping assembly (4) to prevent the two from circumferential rotation, and a stopper (5) is provided at the connection, the heat sink (1) or the lampshade (2) to form a radial fit between the heat sink (1) and the lampshade (2).

2. The LED lamp according to claim 1, Features: The blocking member (5) is arranged on the radiator (1), and part of it extends in the direction where the lampshade (2) is located, so as to form a space between the inner wall of the radiator (1) and the blocking member (5) for the opening of the lampshade (2) to extend into.

3. The LED lamp according to claim 1 or 2, Features: The blocking member (5) comprises a transverse portion (51) connected to the inner wall of the radiator (1), and a vertical portion (52) connected to a side of the transverse portion (51) away from the inner wall of the radiator (1) and extending in the direction of the lampshade (2).

4. The LED lamp according to claim 3, Features: The connection between the vertical part (52) and the transverse part (51) forms a reinforcement part (53).

5. The LED lamp according to claim 4, Features: The outer side wall of the vertical portion (52) facing the inner wall of the radiator (1) forms at least a first inclined guide surface (54).

6. The LED lamp according to claim 5, Features: The outer side wall of the vertical portion (52) facing the inner wall of the radiator (1) is formed with a second inclined guide surface (55), which is located between the reinforcement portion (53) and the first inclined guide surface (54), and has an inclination angle greater than that of the first inclined guide surface (54).

7. The LED lamp according to claim 6, Features: An inner side wall of the vertical portion (52) facing away from the inner wall of the radiator (1) is formed with an inclined surface (56) to increase the thickness of the reinforcement portion (53).

8. The LED lamp according to claim 3, Features: The blocking member (5) is at least partially arranged corresponding to the clamping assembly (4).

9. The LED lamp according to claim 1, Features: The limiting assembly (3) comprises a first limiting step (31) provided on the inner wall of the opening of the heat sink (1), and a second limiting step (32) provided on the outer wall of the opening of the lampshade (2); the first limiting step (31) and the second limiting step (32) are buckled up and down to achieve axial anti-slip fit between the heat sink (1) and the lampshade (2).

10. The LED lamp according to claim 1 or 9, Features: The clamping assembly (4) comprises a first clamping tooth (41) arranged on the inner wall of the opening of the heat sink (1), and a second clamping tooth (42) arranged on the outer wall of the opening of the lampshade (2); the spacing between at least two adjacent second clamping teeth (42) is adapted to the circumferential width of the first clamping tooth (41); the first clamping tooth (41) and the second clamping tooth (42) are circumferentially engaged to achieve circumferential anti-rotation cooperation between the heat sink (1) and the lampshade (2); and the end surface of the second clamping tooth (42) forms the second limiting step (32).

11. The LED lamp according to claim 1 or 9, Features: The snap-fit ​​assembly (4) comprises a convex rib (43) arranged between the stopper (5) and the inner wall of the heat sink (1), and a notch groove (44) arranged at the opening of the lampshade (2); the convex rib (43) is inserted into the notch groove (44) to achieve circumferential anti-rotation fit between the heat sink (1) and the lampshade (2).

12. The LED lamp according to claim 1, Features: The blocking member (5) is arranged on the lampshade (2), and a portion of the blocking member extends in the direction of the radiator (1), so as to form a space between the inner wall of the lampshade (2) and the blocking member (5) for the opening of the radiator (1) to extend into.

13. The LED lamp according to claim 1 or 10, Features: The opening of the lampshade (2) is provided with an extension section (21), the outer wall of the extension section (21) forms a stepped structure (22), the opening of the heat sink (1) forms a stop edge (11) that can abut against the stepped structure (22), and the extension section (21) and the stop edge (11) are buckled inside and outside to form a connection structure between the heat sink (1) and the lampshade (2).

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