Section bar heat dissipation type light-emitting module based on nested insertion structure

Abstract

The utility model discloses a sectional material heat dissipation type light-emitting module based on a nested plug-in structure. The light-emitting module comprises a lens plate, a light-emitting plate, a radiator and a plurality of inserting and fastening structures connected to the lens plate. The radiator is made of a sectional material; the radiator is provided with an insertion groove corresponding to the insertion fastening structure. A clamping groove extending in the length direction of the inserting groove is formed in the tip end position of the inserting fastening structure. A clamping strip is arranged at the bottom of the slot; the shape of the clamping groove is matched with that of the clamping strip; the plugging fastening structure is inserted into the slot; and the clamping strips are inserted into the clamping grooves. According to the utility model, the plug fastening structure is matched with the slot to form a plug structure; a clamping strip and a clamping groove are further arranged on the basis of the insertion fastening structure, so that a plurality of layers of buckle structures which are mutually nested are formed; and the locking force between the fastening structure and the slot is further inserted in a manner that the clamping groove wraps the clamping part at the tail end of the clamping strip, so that the upheaval deformation resistance of the lens plate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of light-emitting equipment, and in particular relates to a profile heat-dissipating light-emitting module based on a nested plug-in structure. Background Art

[0002] The light-emitting module is an indispensable key component in electronic devices such as LED lamps. As the power of the module increases, the heat dissipation problem becomes more prominent. At present, cast heat sinks are generally used to improve the heat dissipation performance of the light-emitting module. However, the fins of the cast heat sink have a draft angle, resulting in a shorter fin length and a larger spacing, which limits the increase in the heat dissipation area and thus limits the improvement in the heat dissipation effect.

[0003] The heat sink made of profiles does not have a draft angle, so longer and denser heat sink fins can be manufactured, effectively improving the heat dissipation performance. However, the extruded profile heat sink cannot produce an annular groove structure, which makes it difficult to ensure the sealing effect between the heat sink and the lens.

[0004] The patent application with publication number "CN116428569A" provides a light-emitting module that connects a lens and a profile heat sink by means of interference fit, and achieves sealing by means of the edge of the lens plate and the profile heat sink; however, its direct and simple interference fit structure still has the risk of falling out. Summary of the invention

[0005] The utility model aims to provide a profile heat dissipation type light emitting module based on a nested plug-in structure.

[0006] The utility model provides a profile heat dissipation type light-emitting module based on a nested plug-in structure, comprising a lens plate, a light-emitting plate, a radiator, and a plurality of plug-in fastening structures connected to the lens plate; the radiator adopts a profile; a slot corresponding to the plug-in fastening structure is provided on the radiator; a clamping groove extending along the length direction of the slot is provided at the tip position of the plug-in fastening structure; a clamping strip is provided at the bottom of the slot; the shape of the clamping groove matches the shape of the clamping strip; the plug-in fastening structure is inserted into the slot; and the clamping strip is inserted into the clamping groove.

[0007] Preferably, the snap-in strip is narrow inside and wide outside; the snap-in slot is wide inside and narrow outside; during the insertion of the snap-in strip into the snap-in slot, both sides of the slot opening of the snap-in slot expand outward first, and then rebound and reset after passing the position where the snap-in strip has the largest width.

[0008] Preferably, the snap-fit ​​strip includes a snap-fit ​​portion away from the bottom surface of the slot, and an extension portion close to the bottom surface of the slot; the snap-fit ​​slot includes a snap-fit ​​slot section close to the bottom surface of the snap-fit ​​slot and matching the snap-fit ​​portion, and an introduction slot section away from the bottom surface of the snap-fit ​​slot and matching the extension portion; the width of the snap-fit ​​portion of the snap-fit ​​strip is greater than the width of the introduction slot section; when the plug-in fastening structure is inserted into the slot to the extreme position, the snap-fit ​​portion of the snap-fit ​​strip extends into the snap-fit ​​slot section of the snap-fit ​​slot.

[0009] As a preferred embodiment, the tip position width of the plug-in fastening structure L 1. The width of the slot that is flush with the maximum width of the card strip L 3. The width of the snap-fitting part of the snap-fit ​​strip L 4. Width of the lead-in slot section of the card slot L 5 satisfies the following relationship: L 1+ L 4- L 5≤ L 3. L 3≤ L 1+ L 4- L 5≤ L 3+ s . s is the maximum interference deformation.

[0010] Preferably, the cross section of the engaging portion is circular.

[0011] Preferably, no rounded corner or transition bevel is provided at the connection between the engaging groove section and the introducing groove section.

[0012] Preferably, the two side walls of the slot are in a V-shaped structure with a width gradually decreasing from the outside to the inside; the tip position width of the plug-in fastening structure L 1 Larger than the bottom width of the slot L 2; the introduction groove section separates the tip of the plug-in fastening structure into two clip sections; when the snap-in strip is inserted into the snap-in slot, the two clip sections first pass over the snap-in portion; then, under the constraint of the two side walls of the slot, they bend inward and deform and press against the two sides of the extension portion of the snap-in strip to form an interference fit.

[0013] Preferably, both side edges of the opening of the slot are provided with arc corners; and both side edges of the opening of the clamping groove are provided with arc corners.

[0014] Preferably, the lens plate comprises a lens body and an annular structure; the annular structure surrounds the lens body and is spaced apart from the outer edge of the lens body; the lens body and the annular structure are connected via a connecting section; a sealing groove surrounding the lens body is formed between the inner edge of the annular structure, the outer edge of the lens body and the heat sink; the sealing groove is filled with sealant; the plug-in fastening structure comprises a main body fastener and two end fastening blocks; the two end fastening blocks are arranged on the annular structure; the main body fastener is arranged on the lens body; and the main body fastener is located between the two end fastening blocks.

[0015] Preferably, the connecting section for connecting the lens body and the annular structure is partially or completely connected between the roots of the main body fastener and the opposite side surfaces of the end fastening block that are facing each other.

[0016] Preferably, only part of the connecting section is connected between the main body fastener and the end fastening block; both ends of the remaining connecting section are directly connected to the outer edge of the lens body and the inner edge of the annular structure respectively.

[0017] Preferably, the light-emitting board comprises a PCB board and a plurality of lamp beads distributed on the PCB board; a plurality of lens units are arranged on the lens body; the position of each lens unit corresponds to the position of each lamp bead on the light-emitting board; the light-emitting board is located between the plug-in fastening structures arranged at both ends of the lens board; the main fasteners in the plug-in fastening structures arranged at both ends of the lens board are of an integral structure; the main fasteners in the remaining plug-in fastening structures are of a segmented structure; the protrusion height of any lens unit of the lens board constrained by each plug-in fastening structure during use is less than a threshold value.

[0018] The utility model has the following beneficial effects:

[0019] The utility model provides a slot with two ends through on the profile, and provides a plug-in fastening structure on the lens plate, and uses the plug-in fastening structure to cooperate with the slot to form a plug-in structure, which replaces the connection methods such as the peripheral screws of the lens plate and the buckle pressing frame connection, making production more convenient and not requiring other parts such as screws. At the same time, the present invention further provides a clamping strip and a clamping slot on the basis of the plug-in fastening structure to form a multi-layer clamping structure that is nested with each other; and then uses the clamping slot to wrap the clamping part at the end of the clamping strip to further increase the locking force between the plug-in fastening structure and the slot, thereby improving the ability of the lens plate to resist bulging and deformation.

[0020] The utility model provides constraints on different positions of the lens plate by setting a plurality of mutually matching slots and plug-in fastening structures at different positions between the heat sink and the lens plate, which can avoid the problem of the middle part of the lens plate bulging during long-term use, and can make the lens plate evenly apply pressure to different positions of the PCB board, so that the PCB board and the heat sink fit more closely, the contact area is larger, and the heat dissipation effect is better. At the same time, the uniform force can make the PCB board less likely to warp, and a thinner PCB board can be used; and because the entire bottom surface of the lens plate is tightly pressed against the light-emitting board, the utility model also improves the tolerance of the surface flatness of the light-emitting board, and does not need to process the flatness of the PCB surface, further reducing the production cost.

[0021] The utility model sets a through sealing groove on the lens plate, and seals the joint between the radiator and the lens plate by applying glue in the sealing groove, so as to achieve an excellent waterproof sealing effect when using a profile radiator, and can also fix the lens plate. This sealing method does not require a sealing ring, which is more conducive to automated production, higher production efficiency and lower production cost. The reason is that the sealing ring is soft, changeable and difficult to control in size. During automation, the robot cannot grab and place the sealing ring, so the step of placing the sealing ring cannot be automated. At the same time, the absence of the sealing ring is also conducive to cost saving. In addition, because the sealing ring is eliminated, the light-emitting area of ​​the lens plate becomes larger and the screen-to-body ratio is larger. At the same time, the radiator in the utility model can directly form a slot and a card strip extending in the same direction in the profile forming process, and its cost is relatively low and its corrosion resistance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an exploded schematic diagram of the overall structure of the utility model.

[0023] Figure 2 The schematic diagram of the structure of the slot in the utility model (ie Figure 1 (a partial enlarged view of part A in the figure).

[0024] Figure 3 It is a front schematic diagram of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the lens plate in the utility model.

[0026] Figure 5 It is a partial structural diagram of the plug-in fastening structure in the utility model (i.e. Figure 4 (a partial enlarged view of part B in the figure).

[0027] Figure 6 It is a schematic diagram of the connection structure between the main body fastener and the slot in the utility model. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings.

[0029] Example 1

[0030] like Figure 1 As shown, a profile heat dissipation type light-emitting module based on a nested plug-in structure includes a lens plate 1, a light-emitting plate 2 and a heat sink 3, and a plurality of plug-in fastening structures 4 integrally formed on the lens plate 1. The light-emitting plate 2 is fixed between the lens plate 1 and the heat sink 3 and is squeezed. The light-emitting plate 2 is tightly attached to the bottom surface of the lens plate 1, which can avoid a gap between the bottom surface of the lens plate and the light-emitting plate 2, so that the light distribution of the lens plate is more accurate and the light output rate of the module is also higher.

[0031] like Figure 3 As shown, the lens plate 1 includes a lens body 1-1 and an annular structure 1-2. The annular structure 1-2 surrounds the lens body 1-1 and is spaced apart from the outer edge of the lens body 1-1; a plurality of plug-in fastening structures 4 are disposed on the lens body 1-1 and the annular structure 1-2, and are sequentially spaced apart along the length direction of the lens plate 1. The lens body 1-1 and the annular structure 1-2 are connected by a connecting section 1-3 to realize an integrated structure between the lens body 1-1 and the annular structure 1-2.

[0032] like Figure 2 As shown, the heat sink 3 is provided with slots 3-1 equal in number to and corresponding to the plug-in fastening structures 4. The slots 3-1 extend along the width direction of the heat sink 3 and penetrate the left and right edges of the heat sink 3. The plug-in fastening structures 4 can be inserted into the corresponding slots 3-1 on the heat sink 3 and fixed by snapping, so that multiple different positions of the lens body 1-1 are constrained by the heat sink 3.

[0033] The power supply line of the light-emitting panel 2 is led out through the wire hole on the heat sink 3. The heat dissipation surface of the heat sink 3 is provided with heat dissipation fins arranged at intervals. In this embodiment, the heat sink 3 is made of extruded aluminum profiles; compared with die-casting, aluminum profiles can produce more dense and longer fins. In some other embodiments, the heat sink 3 can also be made of metal parts made by other processes such as die-casting.

[0034] like Figure 4 and Figure 5 As shown, the length direction of the plug-in fastening structure 4 itself is parallel to the width direction of the lens plate 1, and it includes a main fastener 4-1 and two end fastening blocks 4-2. The two end fastening blocks 4-2 are respectively arranged on both sides of the inner side of the annular structure 1-2; the main fastener 4-1 is arranged on the lens body 1-1; the main fastener 4-1 is arranged between the two end fastening blocks 4-2 in the width direction of the lens plate 1. The thickness of the main fastener 4-1 and the end fastening blocks 4-2 (i.e., the size in the width direction of the slot 3-1) is equal.

[0035] In some embodiments, the connection segment 1-3 for connecting the lens body 1-1 and the annular structure 1-2 is arranged as follows: the connection segment 1-3 is divided into two types; the two ends of the first type of connection segment 1-3 are respectively connected to the roots of the main fastener 4-1 and the opposite sides of the end fastening block 4-2 that are opposite to each other in the plug-in fastening structure 4. The first type of connection segment 1-3 connects the end fastening block 4-2 with the main fastener 4-1; it helps to improve the root strength of the end fastening block 4-2 with a smaller width, and avoids the end fastening block 4-2 from bending and deforming inward or outward or even breaking at the root during the insertion of the end fastening block 4-2 into the slot.

[0036] The two ends of the second type of connecting segment 1-3 are directly connected to the outer edge of the lens body 1-1 and the inner edge of the annular structure 1-2 respectively. On the length side of the lens plate 1. The first type of connecting segment 1-3 and the second type of connecting segment 1-3 are arranged alternately in sequence. On the width side of the lens plate 1, there are only the first type of connecting segment 1-3.

[0037] A snap-in groove 4-3 extending along the length direction of the slot 3-1 is provided at the tip position of the plug-in fastening structure 4 (i.e., the surface farthest from the lens body 1-1). A snap-in strip 3-2 is provided at the bottom of the slot 3-1. The snap-in strip is provided along the length direction of the slot 3-1 and is directly obtained during the extrusion molding of the profile. The shape of the snap-in groove 4-3 matches the shape of the snap-in strip 3-2, so that the snap-in strip 3-2 can be snapped into the snap-in groove 4-3. Specifically, the snap-in strip 3-2 is snapped into the snap-in grooves 4-3 on all the end fastening blocks 4-2 and the main fastener 4-1 in the same plug-in fastening structure 4 at the same time.

[0038] The snap-in strip 3-2 includes a snap-in portion 3-2-1 away from the bottom surface of the slot 3-1, and an extension portion 3-2-2 close to the bottom surface of the slot 3-1. The cross section of the snap-in portion 3-2-1 is circular. The snap-in slot 4-3 includes a snap-in slot section 4-3-1 close to the bottom surface of the snap-in slot 4-3 and matching with the snap-in portion 3-2-1, and an introduction slot section 4-3-2 away from the bottom surface of the snap-in slot 4-3 and matching with the extension portion 3-2-2. When the plug-in fastening structure 4 is fully inserted into the slot 3-1, the snap-in portion 3-2-1 of the snap-in strip 3-2 extends into the snap-in slot section 4-3-1 of the snap-in slot 4-3.

[0039] The connection between the engaging groove section 4-3-1 and the introduction groove section 4-3-2 is not provided with a rounded corner or a transition angle, but is directly connected, thereby increasing the locking force of the engaging groove section 4-3-1 on the engaging portion 3-2-1.

[0040] like Figure 6As shown, the two side walls of the slot 3-1 are in a V-shaped structure with a width gradually decreasing from the outside to the inside (i.e., from the slot opening to the slot bottom), so that the plug-in fastening structure 4 can be smoothly inserted into the slot 3-1. L 1 (specifically the bottom width of the main fastener 4-1 and the end fastening block 4-2) is greater than the bottom width of the slot 3-1 L 2, so that the bottom of the plug-in fastening structure 4 is squeezed and deformed by the slot 3-1 after being fully inserted, forming an interference fit, improving the fastness of the connection, and reducing or even eliminating the gap between the end fastening block 4-2 and the slot 3-1, improving the sealing.

[0041] Width of the engaging portion 3-2-1 of the engaging strip 3-2 L 4 is larger than the width of the lead-in slot section 4-3-2 of the snap-in slot 4-3 L 5, so that the clamping groove 4-3 of the plug-in fastening structure 4 can embrace the clamping portion 3-2-1 of the clamping strip 3-2. The introduction groove section 4-3-2 divides the tip of the plug-in fastening structure 4 into two clamping sections; when the clamping strip 3-2 is inserted into the clamping groove 4-3, the two clamping sections first expand outwards, and then rebound and reset after passing over the clamping portion 3-2-1, and finally bend inwards under the constraint of the V-shaped side wall of the slot and press against the two sides of the extension portion 3-2-2 of the clamping strip 3-2 to form an interference fit.

[0042] In some embodiments, Figure 6 As shown, the tip width of the plug-in fastening structure 4 L 1. The width of the slot 3-1 that is flush with the maximum width of the card strip 3-2 L 3. Width of the engaging portion 3-2-1 of the engaging strip 3-2 L 4. Width of the lead-in slot section 4-3-2 of the clamping slot 4-3 L 5 satisfies the following relationship: L 3≤ L 1+ L 4- L 5≤ L 3+ s . s The maximum interference deformation s is thus formed when the tip of the plug-in fastening structure 4 is inserted into the engaging portion 3-2-1 of the engaging strip 3-2 to form an interference fit, thereby increasing the locking force after the plug-in fastening structure 4 is fully inserted into the slot. As an example of a value, the maximum interference deformation s is 0.05 mm to 0.1 mm.

[0043] In some other embodiments, the clamping strip 3-2 may also present other shapes that are narrow inside and wide outside (i.e., the width gradually increases from the bottom of the slot 3-1 to the slot opening), and the clamping slot 4-3 may also present other shapes that are wide inside and narrow outside (i.e., the width gradually decreases from the bottom of the clamping slot 4-3 to the slot opening). As long as the requirement that the two sides of the slot opening of the clamping slot 4-3 expand outwards first when the clamping strip 3-2 is inserted into the clamping slot 4-3 and then rebound and reset after passing over the clamping portion 3-2-1 is met, it can be used.

[0044] The opening of the slot 3-1 has two edges with rounded corners on both sides to guide the plug-in fastening structure 4 to be inserted into the slot 3-1. The opening of the clamping slot 4-3 has two edges with rounded corners on both sides to guide the clamping strip 3-2 to be inserted into the clamping slot 4-3.

[0045] In some embodiments, non-essential technical features are provided: the shapes of the edges on both sides of the tip of the main fastener 4-1 and the end fastening block 4-2 are different. The edges on both sides of the tip of the main fastener 4-1 are provided with arc angles, so that the main fastener 4-1 can be inserted into the slot 3-1 more smoothly; the edges on both sides of the tip of the main fastener 4-1 are right angles, so that the end fastening block 4-2 can better close the end of the slot 3-1.

[0046] The light-emitting board 2 includes a PCB board and a plurality of lamp beads distributed on the PCB board. A plurality of lens units are integrally formed on the lens body 1-1. The position of each lens unit corresponds to the position of each lamp bead on the light-emitting board 2, and is used to distribute the light emitted by the lamp bead. A clearance groove is provided at a position corresponding to the main body fastener 4-1 on the light-emitting board 2, so that the main body fastener 4-1 can pass through the light-emitting board 2.

[0047] After all the plug-in fastening structures 4 are snapped into the snap-in strips 3-2 in the corresponding slots 3-1, the lens plate 1 is in close contact with the light-emitting board 2, and the lens plate 1 presses the light-emitting board 2 onto the heat sink 3; the plug-in fastening structure 4 in the middle of the lens plate 1 can pull the middle position of the lens body 1-1 to prevent the middle part of the lens body 1-1 from bulging and deforming, and a gap is generated between the lens plate 1 and the light-emitting board 2, so that the lens plate 1 maintains high accuracy of light distribution during long-term use, and the light output rate of the light-emitting module is maintained at a high level. It should be noted that due to the heat generated during the operation of the light-emitting module, the air pressure inside and outside the lens plate 1 will be inconsistent. When the connection between the lens plate 1 and the heat sink 3 is not tight enough, the lens plate 1 will be separated from the light-emitting board 2, affecting the sealing effect of the light-emitting module and affecting the accuracy of its light distribution.

[0048] In addition, the light-emitting module provided in this embodiment is assembled by pressing, which avoids possible breakage caused by unnecessary stress compared to the fixing method of screws; and the integrated design of this embodiment will not produce holes, and there is no extra gap, so the sealing effect is good. At the same time, no extra main fasteners are required, which is convenient for automatic installation.

[0049] It should be noted that the number of main fasteners 4-1 is not limited under the condition that the lens plate 1 does not arch and separate from the light-emitting board 2. In some embodiments, the light-emitting board is located between the plug-in fastening structures 4 arranged at both ends of the lens plate 1; the main fasteners 4-1 in the plug-in fastening structures 4 arranged at both ends of the lens plate 1 are of an integral structure; the main fasteners 4-1 in the remaining plug-in fastening structures 4 are of a segmented structure, divided into three or more fastening block units arranged in sequence, so as to prevent the plug-in fastening structures 4 from completely isolating the light-emitting board 2.

[0050] After the lens plate 1 is installed, a sealing groove 1-4 surrounding the lens body 1-1 is formed between the inner edge of the annular structure 1-2, the outer edge of the lens body 1-1 and the installation surface of the heat sink, and the sealing groove 1-4 is connected to the slot 3-1. Sealant is applied in the sealing groove 1-4, and the sealant can flow into the slot 3-1 for sealing.

[0051] In some embodiments, the number of the plug-in fastening structures 4 is an even number; the plug-in fastening structures 4 on both sides of the center position of the lens plate 1 form a symmetrical structure, so that when the plug-in fastening structures 4 are inserted into the slots 3-1 on the heat sink 3, the forces at different positions of the lens plate 1 are relatively balanced. The bulge height of any lens unit constrained by each plug-in fastening structure 4 during use is less than a threshold value; the threshold value is used to ensure that the lens unit maintains an effective light distribution effect during long-term use. The spacing between adjacent plug-in fastening structures 4 is adjusted according to the material properties of the lens plate 1 to meet the requirement that the bulge height is less than the threshold value.

Claims

1. A profile heat dissipation type light-emitting module based on a nested plug-in structure, comprising a lens plate (1), a light-emitting plate (2) and a heat sink (3); characterized in that: It also includes a plurality of plug-in fastening structures (4) connected to the lens plate (1); the heat sink (3) is made of profile; a slot (3-1) corresponding to the plug-in fastening structure (4) is provided on the heat sink (3); a clamping slot (4-3) extending along the length direction of the slot (3-1) is provided at the tip of the plug-in fastening structure (4); a clamping strip (3-2) is provided at the bottom of the slot (3-1); the shape of the clamping slot (4-3) matches the shape of the clamping strip (3-2); the plug-in fastening structure (4) is inserted into the slot (3-1); and the clamping strip (3-2) is inserted into the clamping slot (4-3).

2. According to claim 1, a profile heat dissipation type light-emitting module based on a nested plug-in structure is characterized in that: The clamping strip (3-2) is narrow inside and wide outside; the clamping slot (4-3) is wide inside and narrow outside; when the clamping strip (3-2) is inserted into the clamping slot (4-3), both sides of the notch of the clamping slot (4-3) first expand outwards, and then rebound and reset after passing the position where the width of the clamping strip (3-2) is the largest.

3. According to claim 2, a profile heat dissipation type light-emitting module based on a nested plug-in structure is characterized in that: The snap-in strip (3-2) comprises a snap-in portion (3-2-1) away from the bottom surface of the slot (3-1), and an extension portion (3-2-2) close to the bottom surface of the slot (3-1); the snap-in slot (4-3) comprises a snap-in slot section (4-3-1) close to the bottom surface of the snap-in slot (4-3) and matching with the snap-in portion (3-2-1), and an introduction slot section (4-3-2) away from the bottom surface of the snap-in slot (4-3) and matching with the extension portion (3-2-2); the width of the snap-in portion (3-2-1) of the snap-in strip (3-2) is greater than the width of the introduction slot section (4-3-2); when the plug-in fastening structure (4) is inserted into the slot (3-1) to the limit position, the snap-in portion (3-2-1) of the snap-in strip (3-2) extends into the snap-in slot section (4-3-1) of the snap-in slot (4-3).

4. The profile heat dissipation type light emitting module based on the nested plug-in structure according to claim 3, characterized in that: Width at the tip of the plug-in fastening structure (4) L 1. The width of the slot (3-1) at the position flush with the maximum width of the card strip (3-2) L 3. Width of the engaging portion (3-2-1) of the engaging strip (3-2) L 4. Width of the lead-in slot section (4-3-2) of the snap-in slot (4-3) L 5 satisfies the following relationship: L 3≤ L 1+ L 4- L 5≤ L 3+ s ; s is the maximum interference deformation.

5. The profile heat dissipation type light emitting module based on the nested plug-in structure according to claim 3, characterized in that: The cross section of the engaging portion (3-2-1) is circular.

6. The profile heat dissipation type light emitting module based on a nested plug-in structure according to claim 3, characterized in that: The connection between the engaging groove section (4-3-1) and the introduction groove section (4-3-2) is not provided with a rounded corner or a transition bevel.

7. The profile heat dissipation type light emitting module based on a nested plug-in structure according to claim 1, characterized in that: The two side walls of the slot (3-1) are in a V-shaped structure with a width gradually decreasing from the outside to the inside; the tip of the plug-in fastening structure (4) has a width of L 1 is larger than the bottom width of the slot (3-1) L 2; the introduction groove section (4-3-2) separates the tip of the plug-in fastening structure (4) into two clip sections; during the insertion of the snap-in strip (3-2) into the snap-in groove (4-3), the two clip sections first pass over the snap-in portion (3-2-1); then, under the constraint of the two side walls of the slot, they bend inward and deform and press against the two sides of the extension portion (3-2-2) of the snap-in strip (3-2), forming an interference fit.

8. The profile heat dissipation light emitting module based on a nested plug-in structure according to claim 1, characterized in that: Both sides of the opening of the slot (3-1) are provided with arc corners; and both sides of the opening of the clamping slot (4-3) are provided with arc corners.

9. The profile heat dissipation type light emitting module based on a nested plug-in structure according to claim 1, characterized in that: The lens plate (1) comprises a lens body (1-1) and an annular structure (1-2); the annular structure (1-2) surrounds the lens body (1-1) and is spaced apart from the outer edge of the lens body (1-1); the lens body (1-1) and the annular structure (1-2) are connected via a connecting section (1-3); a sealing groove (1-4) surrounding the lens body (1-1) is formed between the inner edge of the annular structure (1-2), the outer edge of the lens body (1-1) and the heat sink; the sealing groove (1-4) is filled with sealant; the plug-in fastening structure (4) comprises a body fastener (4-1) and two end fastening blocks (4-2); the two end fastening blocks (4-2) are arranged on the annular structure (1-2); the body fastener (4-1) is arranged on the lens body (1-1); and the body fastener (4-1) is located between the two end fastening blocks (4-2).

10. The profile heat dissipation type light emitting module based on the nested plug-in structure according to claim 9, characterized in that: A connecting section (1-3) for connecting a lens body (1-1) and an annular structure (1-2) is partially or completely connected between roots of opposite sides of a main body fastener (4-1) and an end fastening block (4-2) facing each other.

11. The profile heat dissipation type light emitting module based on a nested plug-in structure according to claim 9, characterized in that: Only part of the connecting section (1-3) is connected between the main body fastener (4-1) and the end fastening block (4-2); the two ends of the remaining connecting section (1-3) are directly connected to the outer edge of the lens main body (1-1) and the inner edge of the annular structure (1-2), respectively.

12. The profile heat dissipation type light emitting module based on a nested plug-in structure according to claim 9, characterized in that: The light-emitting board (2) comprises a PCB board and a plurality of lamp beads distributed on the PCB board; a plurality of lens units are arranged on the lens body (1-1); the position of each lens unit corresponds to the position of each lamp bead on the light-emitting board (2); the light-emitting board is located between the plug-in fastening structures (4) arranged at both ends of the lens board (1); the main body fasteners (4-1) in the plug-in fastening structures (4) arranged at both ends of the lens board (1) are of an integral structure; the main body fasteners (4-1) in the remaining plug-in fastening structures (4) are of a segmented structure; and the protrusion height of any lens unit constrained by each plug-in fastening structure (4) during use is less than a threshold value.

Images