Light-emitting module based on middle strengthening and fastening structure

Abstract

The utility model discloses a light-emitting module based on a middle strengthening and fastening structure. The utility model provides a light-emitting module. The light-emitting module comprises a lens plate, a light-emitting plate, a radiator and a strengthening and fastening structure which are sequentially arranged in a stacked mode. The reinforced fastening structure comprises a plurality of interference fit units; the interference fit unit comprises a plug connector and a slot; the plug connectors correspond to the slots in position; the plug connectors penetrate through the light-emitting plate and are inserted into the corresponding slots to form interference fit. According to the utility model, the lens plate and the radiator are in interference fit through an inserted structure; according to the structure, on one hand, tension constraint can be provided for the lens plate, so that the lens plate is not prone to upheaval deformation in long-term use, and the lens light distribution accuracy is improved; on the other hand, the middle of the lens plate can apply extrusion force to the middle of the light-emitting plate, it is ensured that the middle of the light-emitting plate is tightly attached to the radiator, the heat exchange area of the light-emitting plate and the radiator is increased, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting equipment, and in particular relates to a light-emitting module based on a middle reinforcement fastening structure. Background Art

[0002] At present, due to the light-emitting characteristics of light-emitting diodes, they will emit heat while emitting light, causing the temperature of the light-emitting module to rise; and when the operating temperature of the light-emitting diode is too high, it will cause color change and light decay, and its life span will be greatly reduced. Therefore, the industry has begun to use heat dissipation devices to assist in the heat dissipation of light-emitting diodes. The main heat dissipation method of the light-emitting module is: a lens plate is set on the front of the PCB board with lamp beads, and a heat sink is set on the back. The heat sink is used to quickly dissipate the heat energy generated by the light-emitting diode, maintain the operating temperature of the light-emitting diode, and ensure its service life. At present, most PCB boards are fixed to the heat sink by screws. However, the screw fixing method is prone to warping and deformation of the PCB board, causing the PCB board to warp up away from the screws, and a gap is generated between the PCB board and the heat sink, reducing the heat dissipation effect.

[0003] In addition, the heat generated by the light-emitting module will increase the temperature of the lens plate, which in turn causes thermal deformation of the lens plate, causing the middle part of the lens plate to bulge and deform, which in turn causes the relative position between the lens and the lamp bead to change, resulting in inaccurate light distribution of the lens and reducing the light-emitting efficiency of the light-emitting module. Therefore, it is necessary to design a light-emitting module with high heat dissipation efficiency and capable of suppressing the bulging and deformation of the middle part of the lens plate. Summary of the invention

[0004] The purpose of the utility model is to provide a light-emitting module based on a middle-part strengthening and fastening structure.

[0005] The light-emitting module provided by the utility model comprises a lens plate, a light-emitting plate, a heat sink and a reinforced fastening structure which are stacked in sequence; the reinforced fastening structure comprises a plurality of interference fit units; the interference fit units comprise a plug-in and a slot; the positions of the plug-in and the slot correspond to each other; the plug-in passes through the light-emitting plate and is inserted into the corresponding slot to form an interference fit.

[0006] The interference fit unit adopts any of the following two structures:

[0007] Structure 1: The connector is connected to the lens plate, and the slot is set on the heat sink.

[0008] Structure 2: The connector is connected to the heat sink, and the slot is arranged on the lens plate.

[0009] Preferably, part or all of the interference fit unit also includes a boss; when the interference fit unit adopts structure one, the boss is arranged on the heat sink; when the interference fit unit adopts structure two, the boss is arranged on the lens plate; the slot is arranged on the outer end face of the boss.

[0010] Preferably, the interference fit unit provided with the boss also includes a groove; when the interference fit unit adopts structure one, the groove is opened on the lens plate; when the interference fit unit adopts structure two, the groove is opened on the heat sink; the groove surrounds the connector; the boss passes through the light-emitting panel and extends into the groove.

[0011] Preferably, when the interference fit unit adopts structure one, the connector is integrally formed on the lens plate; and when the interference fit unit adopts structure two, the connector is integrally formed on the heat sink.

[0012] Preferably, there is static friction between the connector and the slot at the interference fit position; the static friction creates a squeezing force between the lens plate and the light-emitting plate, that is, the static friction and the supporting force exerted by the light-emitting plate on the lens plate achieve a force balance.

[0013] Preferably, a groove is provided on the outer end surface of the connector; the depth of the groove is less than the height of the connector; the connector is divided into a deformation portion corresponding to the position of the groove, and an interference portion offset from the position of the groove in the height direction; the interference portion forms an interference fit with the slot, and the interference amount is 0.1mm to 0.3mm.

[0014] Preferably, the outer side of the connector is uneven; and a sealant is provided between the slot and the connector.

[0015] Preferably, the connector has a scalloped structure; a center hole is provided on the connector; a portion of the connector corresponding to the center hole is a deformation portion, and other portions are interference portions, and the interference portion forms an interference fit with the slot.

[0016] Preferably, the side wall of the slot is in the shape of a frustum that is larger on the outside and smaller on the inside.

[0017] Preferably, the connector is provided with a plurality of deformation grooves; the positions of the deformation grooves correspond to the positions of the center hole.

[0018] Preferably, the number of the interference fit units is an even number; every two interference fit units form a group; and the two interference fit units in the same group are symmetrically arranged on opposite sides of the center position of the lens plate.

[0019] Preferably, the areas on the side walls of the slot that form an interference fit with the connector are inclined from the inside to the outside in the depth direction of the slot and gradually move away from the center of the slot.

[0020] Preferably, a positioning slot is provided on the light emitting board; the reinforcing fastening structure passes through the positioning slot and provides positioning for the light emitting board.

[0021] Preferably, two side surfaces of the light-emitting panel are respectively attached to the lens panel and the heat sink; and a sealing structure is provided between the edge of the lens panel and the heat sink.

[0022] Preferably, the heat sink is provided with a first convex edge surrounding the lens plate, the lens plate is located inside the first convex edge, and a solid sealing ring is provided between the edge of the lens plate and the inner side surface of the first convex edge.

[0023] Preferably, the first convex edge is provided with a second convex edge, the edge sealing portion is provided with a third convex edge, the second convex edge surrounds the outer side of the third convex edge, an annular groove is formed between the second convex edge and the third convex edge, and the annular groove is filled with sealant.

[0024] Preferably, the joint formed between the first convex edge and the edge of the lens plate is located between the bottoms of the two side walls of the annular groove.

[0025] Preferably, the outer edge of the edge sealing portion is provided with a first sealing groove surrounding the lens plate, a solid sealing ring is embedded in the first sealing groove, and the solid sealing ring abuts against the inner side surface of the first convex edge.

[0026] Preferably, the edge of the lens plate presents a stepped structure that gradually decreases from the outside to the inside. The heat sink is provided with an annular clearance groove. The clearance groove is completely or partially aligned with the edge of the lens plate; a solid sealing ring is sleeved on the edge of the lens plate; the solid sealing ring contacts the clearance groove on the heat sink, the first sealing groove at the edge of the lens plate, and the inner side of the first convex edge. The longitudinal section of the solid sealing ring is L-shaped, and the inner concave portion fits the edge of the lens plate.

[0027] Preferably, the light emitting module further comprises a connection cover; the connection cover is fixed to the heat sink; and the connection cover is in contact with the outer side surface of the lens plate.

[0028] Preferably, a solid sealing ring is provided between the lens plate and the heat sink; the solid sealing ring surrounds the light-emitting plate.

[0029] Preferably, the contact area between the connection cover and the outer side surface of the lens plate is located on a side of the solid sealing ring close to the light-emitting plate.

[0030] Preferably, the inner side of the lens plate is provided with an annular second sealing groove and a third sealing groove; a solid sealing ring is arranged in the second sealing groove; the third sealing groove surrounds the outer side of the second sealing groove; and sealant is filled between the third sealing groove and the heat sink.

[0031] Preferably, the connection cover is annular; a plurality of buckles are provided on the outer edge of the connection cover; a buckle step is provided at the edge of the radiator; and the buckle and the buckle step on the radiator form a buckle fit.

[0032] Preferably, the side surface of the connection cover close to the light-emitting board presents an inclined structure which gradually moves away from the light-emitting board from the inside to the outside.

[0033] Preferably, the inner edge of the connection cover is provided with an annular pressing edge; the outer side surface of the lens plate is provided with a pressing groove; the shape of the pressing groove corresponds to the shape of the pressing edge; and the pressing edge abuts against the pressing groove.

[0034] Preferably, the two sides of the radiator are a mounting surface and a heat dissipation surface respectively; the mounting surface of the radiator is in contact with the light-emitting panel; the heat dissipation surface of the radiator is provided with heat dissipation fins arranged at intervals; the radiator is provided with a wire passing hole; the power supply line of the light-emitting panel is led out through the wire passing hole; and the connection between the radiator and the power supply line is sealed.

[0035] Preferably, the light-emitting board comprises a PCB board and a plurality of lamp beads distributed on the PCB board; a plurality of lenses are arranged on the lens board; and the position of each lens corresponds to the position of each lamp bead on the light-emitting board.

[0036] The beneficial effects of the utility model are:

[0037] The utility model forms an interference fit between the middle part of the lens plate and the middle part of the radiator through a plug-in structure; on the one hand, the structure can provide a tensile constraint on the lens plate, so that the lens plate is not prone to bulge deformation during long-term use, improve the accuracy of lens light distribution, and thus enable the light-emitting module to maintain a high light output rate during long-term use. On the other hand, the middle part of the lens plate can apply a squeezing force to the middle part of the light-emitting board, ensuring that the middle part of the light-emitting board fits tightly on the radiator, thereby increasing the heat exchange area between the light-emitting board and the radiator and improving the heat dissipation effect.

[0038] The middle position of the light-emitting board in the utility model is positioned and fixed by a reinforced fastening structure based on an interference structure, and the edge position is pressed by a lens plate, thereby avoiding the technical solution of using screws for fixing between the light-emitting board and the heat sink, and further avoiding the problem of warping and deformation of the PCB board away from the screws caused by screw fixing. This enables the light-emitting board in the utility model to be close to the heat sink at the same time, thereby improving the heat dissipation efficiency.

[0039] The PCB board in the utility model is pressed between the lens board and the heat sink, and the overall force is balanced; therefore, the thickness of the PCB board can be further reduced without worrying about deformation problems, thereby further reducing the production cost of the light-emitting module. In addition, since the entire bottom surface of the lens board is tightly pressed on the PCB board, the requirements for the surface flatness of the PCB board are reduced, eliminating the process of processing the flatness of the PCB surface, and reducing the production cost of the light-emitting module.

[0040] The utility model is based on the plug-in component and the slot, and a positioning boss and a corresponding positioning groove are arranged around the plug-in component and the slot, and a corresponding positioning through hole is arranged on the PCB board. When the PCB board is placed on the radiator, the positioning boss passes through the positioning through hole so that the PCB board and the radiator are relatively fixed in the horizontal direction, ensuring that the PCB board will not move or deviate during subsequent assembly. In addition, since the slot is arranged in the positioning boss, the length of the slot is increased, so that the plug-in component and the slot are fixed more firmly.

[0041] The plug-in connector in the utility model is integrally formed on the lens plate, and while the middle position of the lens plate forms an interference fit with the heat sink, no additional independent connector is generated, thereby simplifying the complexity of assembling the light-emitting module.

[0042] In Example 1 of the utility model, a mounting groove is provided on the heat sink so that the lens plate is surrounded by the inner side of the annular first convex edge, thereby providing a sealing ring around the edge of the lens plate so that the elastic force generated by the sealing ring will not tend to push the lens plate away from the heat sink.

[0043] Embodiment 3 of the utility model uses an independent connection cover to realize the fixation of the lens plate and the heat sink; because the connection cover does not need to be light-transmissive, the connection cover can be made of a material with greater strength than the lens plate; therefore, compared with the technical solution of directly fixing the lens plate and the heat sink together, the utility model can effectively improve the firmness of the light-emitting module. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is an exploded schematic diagram of the light-emitting module provided in Example 1 of the utility model.

[0045] Figure 2 This is a schematic cross-sectional view of the light-emitting module provided in Example 1 of the utility model along the length direction.

[0046] Figure 3 Schematic diagram of the connection between the edge of the lens plate and the heat sink in Example 1 of the utility model ( Figure 2 (a partial enlarged view of part A in the figure).

[0047] Figure 4 This is a schematic diagram of the structure of the strengthening fastening structure in Example 1 of the utility model ( Figure 2 (a partial enlarged view of part B in the figure).

[0048] Figure 5 This is a schematic diagram of the structure of the connector in Example 1 of the utility model.

[0049] Figure 6 This is a schematic diagram of the connection between the edge of the lens plate and the heat sink in Example 2 of the utility model.

[0050] Figure 7 This is an exploded schematic diagram of the light-emitting module provided in Example 3 of the utility model.

[0051] Figure 8 This is a schematic cross-sectional view of the light-emitting module provided in Example 3 of the utility model along the length direction.

[0052] Fig. 9 This is a schematic diagram of the structure of the connection cover in Example 3 of the utility model ( Figure 8 (partial enlarged view of part C in the figure).

[0053] Fig.10 This is a schematic diagram of the structure of the strengthening fastening structure in Example 3 of the utility model ( Figure 8 (a partial enlarged view of part D in the figure).

[0054] Fig.11 It is a schematic structural diagram of the connector and the groove of the reinforced fastening structure in Examples 4 and 5 of the utility model.

[0055] Fig.12 It is a schematic structural diagram of the boss and slot of the reinforcing fastening structure in Examples 4 and 5 of the utility model.

[0056] Fig.13 It is a cross-sectional schematic diagram of the reinforcing fastening structure in Examples 4 and 5 of the utility model.

[0057] Fig.14 It is a schematic diagram of the structure of the connector in Examples 8 and 9 of the present utility model.

[0058] Fig.15 It is a schematic diagram of the structure of the slots in Examples 8 and 9 of the utility model.

[0059] Fig.16 It is a schematic diagram of the structure of the connector in Examples 12 and 13 of the utility model. DETAILED DESCRIPTION

[0060] The utility model is further described below in conjunction with the accompanying drawings.

[0061] Example 1

[0062] like Figure 1 and 2As shown, a light-emitting module includes a lens plate 1, a light-emitting board 2, a heat sink 3, a solid sealing ring 4, a reinforcing fastening structure 5 and a power supply line 6. The lens plate 1, the light-emitting board 2 and the heat sink 3 are stacked in sequence. The light-emitting board 2 includes a PCB board and a plurality of lamp beads distributed on the PCB board. A plurality of lenses are integrally formed on the lens plate 1. The position of each lens corresponds to the position of each lamp bead on the light-emitting board 2. The two sides of the heat sink 3 are a mounting surface and a heat dissipation surface respectively; the mounting surface of the heat sink 3 is in contact with the light-emitting board 2; and 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 obtained by die-casting. A wire hole is provided in the center of the heat sink 3; the power supply line 6 of the light-emitting board 2 is led out through the wire hole. The connection between the heat sink 3 and the power supply line 6 is sealed.

[0063] like Figure 2 and 3 As shown, a first flange 3-1 surrounding the lens plate 1 is provided at the edge of the mounting surface of the heat sink 3. The first flange 3-1 forms a mounting groove on the mounting surface of the heat sink 3. The lens plate 1 is mounted in the mounting groove. An edge sealing portion 1-1 surrounding the main body of the lens plate 1 is integrally formed at the edge of the lens plate 1. The thickness of the annular edge sealing portion 1-1 is greater than the thickness of the main body of the lens plate 1, so as to achieve effective sealing between the heat sink 3 and the lens plate 1. The thickness of the edge sealing portion 1-1 is equal to the height of the first flange 3-1, so that the top of the edge sealing portion 1-1 is flush with the top of the first flange 3-1.

[0064] A first sealing groove 1-2 surrounding the edge sealing part 1-1 is provided in the middle of the outer edge of the edge sealing part 1-1 (i.e., the edge away from the center of the lens plate 1). A solid sealing ring 4 is embedded in the first sealing groove 1-2. The solid sealing ring 4 abuts against the inner side surface of the first convex edge 3-1 (i.e., the side surface close to the center of the radiator 3). The solid sealing ring 4 is used to achieve sealing and waterproofing of the joint formed between the first convex edge 3-1 on the radiator 3 and the edge sealing part 1-1 on the lens plate 1. The first convex edge 3-1 on the radiator 3 and the edge sealing part 1-1 of the lens plate 1 can form a clearance fit, a transition fit, or an interference fit.

[0065] This embodiment provides an optional alternative technical feature: the first sealing groove 1-2 is not provided on the edge sealing portion 1-1; the first sealing groove 1-2 is provided on the inner side surface of the first protrusion 3-1; the solid sealing ring 4 is embedded in the first sealing groove 1-2 and presses against the outer edge of the edge sealing portion 1-1 of the lens plate 1.

[0066] This embodiment provides an optional alternative technical feature: first sealing grooves 1-2 are provided on the opposite sides of the edge sealing portion 1-1 and the first flange 3-1; the solid sealing ring 4 is embedded between the two first sealing grooves 1-2. A second flange 3-2 is provided at the top of the first flange 3-1 (i.e., the edge away from the main body of the radiator); a third flange 1-3 is provided at the top of the edge sealing portion 1-1 (i.e., the position of the edge sealing portion 1-1 farthest from the main body of the radiator); the second flange 3-2 surrounds the outside of the third flange 1-3, and the inner side surface of the second flange 3-2 is spaced from the outer side surface of the third flange 1-3.

[0067] An annular groove 8 is formed between the second convex edge 3-2 and the third convex edge 1-3, with the top of the first convex edge 3-1 and the top of the edge sealing portion 1-1 as the bottom surface; the annular groove 8 is filled with sealant (not shown in the figure). The sealant is filled into the annular groove 8 in liquid state and solidified to form a stable and reliable sealing structure. The solid sealing ring 4 and the sealant form a double sealing protection structure, thereby achieving a better sealing effect, effectively preventing the light-emitting module from being damaged due to water seepage, and effectively improving the stability of the light-emitting module in long-term use in harsh environments.

[0068] This embodiment provides a preferred non-essential technical feature: a ring-shaped clearance groove 3-3 is provided on the mounting surface of the heat sink 3. The clearance groove 3-3 is located on the inner side of the first convex edge 3-1 (i.e., the side close to the center of the heat sink). The clearance groove 3-3 is aligned with the edge sealing portion 1-1 of the lens plate 1, and a reserved space is added for the installation of the lens plate 1.

[0069] This embodiment provides a preferred non-essential technical feature: the inner side surface of the second convex edge 3-2 is located on the side of the inner side surface of the first convex edge 3-1 away from the center of the heat sink 3. The outer side surface of the third convex edge 1-3 (the side away from the center of the lens plate) is located on the side of the outer edge of the edge sealing portion 1-1 close to the center of the lens plate, so that the joint formed between the edge sealing portion 1-1 and the second convex edge 3-2 is located in the middle of the bottom of the annular groove 8.

[0070] This technical feature can bring the following effects: First, it makes the joint which is the weak sealing position be located in the middle position of the bottom of the sealant instead of the edge position, which helps to improve the sealing performance; Second, it makes the width of the annular groove 8 be provided by the edge structure of the heat sink and the upper edge structure of the lens plate, which helps to reduce the size of the heat sink and increase the proportion of the light-emitting area on the light-emitting module.

[0071] like Figure 1 , 2As shown in FIGS. 4 and 5, the strengthening fastening structure 5 includes two interference fit units. The two interference fit units are symmetrically arranged on opposite sides of the center position of the lens plate 1. The interference fit unit includes a plug-in 5-1 integrally formed on the inner side of the lens plate 1, a positioning groove 5-3 provided on the light-emitting plate, and a slot 5-2 provided on the mounting surface of the heat sink 3. The positions of the plug-in 5-1, the positioning groove 5-3 and the slot 5-2 correspond to each other.

[0072] The connector 5-1 passes through the positioning groove 5-3 on the light-emitting board 2 and is inserted into the corresponding slot 5-2 to form an interference fit. After the connector 5-1 is inserted into the slot 5-2 to the limit position, a pre-tightening pressure is further applied to the lens plate 1, so that the light-emitting board 2 is squeezed by the lens plate 1 and the heat sink 3, and the depth of the connector 5-1 inserted into the slot 5-2 is further increased (the space required for further insertion is provided by the elastic deformation of the lens plate 1, the light-emitting board 2 and the heat sink 3); when the pre-tightening pressure on the lens plate 1 is cancelled, a friction force that resists the recovery of elastic deformation is generated between the interference-fit connector 5-1 and the slot 5-2, so that the lens plate 1 maintains the squeezing force on the light-emitting board 2 and presses the light-emitting board 2 onto the heat sink 3. The shape of the positioning groove 5-3 corresponds to the shape of the connector 5-1. The light-emitting board realizes its own positioning in the light-emitting module through the positioning groove 5-3.

[0073] At the same time, the connector 5-1 can prevent the middle part of the lens plate 1 from swelling and deforming due to heat during use, thereby preventing a gap from being generated between the lens and the light-emitting board 2, and preventing the relative position between each lamp bead and the corresponding lens from changing. Therefore, the structure of the connector 5-1 and the slot 5-2 can keep the lens light distribution of the light-emitting module accurate during long-term use. It can be seen that the reinforced fastening structure 5 provided in this embodiment can not only further improve the deformation resistance of the lens plate 1, but also improve the tightness of the fit between the light-emitting board and the heat sink, and can also provide positioning for the light-emitting board to prevent the light-emitting board from shifting in position.

[0074] In addition, the edge of the lens plate 1 and the edge of the radiator 3 form a snap fit through the connecting cover 7, so that the edge of the light-emitting board 2 is also squeezed by the lens plate 1 and the radiator 3, so that the edge of the light-emitting board 2 fits tightly on the radiator 3, ensuring that the light-emitting board 2 has good heat dissipation during long-term use.

[0075] This embodiment provides a preferred non-essential technical feature: the connector 5-1 is rectangular in shape and has a slot 5-1-1 arranged along its length. The slot 5-1-1 forms two deformation plates spaced apart from each other on the connector 5-1. The depth of the slot 5-1-1 is less than the height of the connector 5-1, so that the end of the connector 5-1 close to the lens plate 1 forms a portion not separated by the slot 5-1-1. The depth of the slot 5-1-1 is greater than or equal to 2 mm (preferably equal to 2 mm), and the width is greater than or equal to 0.7 mm (preferably equal to 0.7 mm).

[0076] The connector 5-1 is divided into a deformation portion 5-1-2 corresponding to the position of the slot 5-1-1 and an interference portion 5-1-3 offset from the position of the slot 5-1-1 in the height direction. The deformation portion 5-1-2 has a relatively small rigidity under the action of the slot 5-1-1, and is used to deform when inserted into the slot 5-2, so as to increase the depth of the connector 5-1 inserted into the slot 5-2; the interference portion 5-1-3 has a solid structure and a relatively large rigidity, and is used to form an interference with the side wall of the slot 5-2, so that a friction force that resists deformation can be generated between the lens plate 1 and the heat sink 3. The interference that can generate the friction force that resists deformation between the lens plate 1 and the heat sink 3 is provided by the interference portion 5-1-3 of the connector 5-1.

[0077] This embodiment provides a preferred non-essential technical feature: the two side surfaces of the slot 5-2 and the plug-in connector 5-1 are arranged in opposite directions with an interference fit, and the distance gradually increases from the inside to the outside; this shape can facilitate the plug-in connector 5-1 to be inserted into the slot 5-2 and gradually form an interference fit structure, and it is also helpful for the mold opening of the slot 5-2. The interference amount between the interference portion 5-1-3 on the plug-in connector 5-1 and the slot 5-2 is greater than or equal to 0.1mm.

[0078] This embodiment provides a preferred non-essential technical feature: wavy stripes 5-1-4 are provided on both sides of the connector 5-1. A sealant is provided between the slot 5-2 and the connector 5-1; the sealant enters into the gap formed between the concave area of ​​the stripes 5-1-4 on the connector 5-1 and the slot 5-2, so that the adhesion between the connector 5-1 and the slot 5-2 is further increased on the basis of the friction force, thereby improving the stability of the connection between the connector 5-1 and the heat sink 3. The sealant between the slot 5-2 and the connector 5-1 is formed in the following manner: before the connector 5-1 is inserted into the slot 5-2, liquid sealant is injected into the slot 5-2. In the process of inserting the connector 5-1 into the slot 5-2, the sealant is automatically squeezed into the concave area on the outside of the connector 5-1; after the sealant is cured, the function of bonding the connector 5-1 and the slot 5-2 can be achieved. It should be noted that the sealant between the slot 5-2 and the connector 5-1 is not an essential technical feature. If the connection between the connector 5-1 and the slot 5-2 is sufficiently stable, there is no need to apply sealant in the slot 5-2.

[0079] This embodiment provides a preferred non-essential technical feature: the lens plate 1 is made of PC, which can withstand the pressure of 5000N to 30000N required to be applied when the connector 5-1 is inserted into the slot 5-2.

[0080] Example 2

[0081] A light emitting module, the difference between this embodiment and embodiment 1 is that the sealing structure between the edge of the lens plate 1 and the heat sink 3 is different.

[0082] like Figure 6 As shown, in this embodiment, a first sealing groove 1-2 is provided on the outer edge of the edge sealing portion 1-1 of the lens plate 1, and the first sealing groove 1-2 is connected to the bottom edge of the lens plate 1, so that a stepped structure that gradually decreases from the outside to the inside is formed on the outer edge of the edge sealing portion 1-1. The solid sealing ring 4 is in contact with the clearance groove 3-3 on the heat sink 3, the first sealing groove 1-2 at the edge of the lens plate 1, and the inner side of the first convex edge 3-1, thereby further increasing the sealing area. At this time, the clearance groove 3-3 plays the role of accommodating the solid sealing ring 4.

[0083] This embodiment provides a preferred non-essential technical feature: the longitudinal section of the solid sealing ring 4 (i.e., the section perpendicular to the length direction of the solid sealing ring 4) is L-shaped; the inner concave surface formed by the L-shaped structure on the solid sealing ring 4 is attached to the stepped surface of the edge sealing portion 1-1 (i.e., the two surfaces forming the outer convex corners), thereby preventing the solid sealing ring 4 from twisting and deforming during the process of installing the lens plate 1 into the heat sink 3.

[0084] The other structures of this embodiment are the same as those of embodiment 1.

[0085] Example 3

[0086] like Figure 7 and 8 As shown, a light-emitting module includes a lens plate 1, a light-emitting plate 2, a heat sink 3, a connection cover 7, a reinforcing fastening structure 5 and a power supply line 6. The lens plate 1, the light-emitting plate 2 and the heat sink 3 are stacked in sequence. The connection cover 7 is annular and is used to squeeze and fix the lens plate 1 and the heat sink 3 together; the inner edge of the connection cover 7 contacts the outer side of the lens plate 1 and provides positioning for the lens plate 1; the outer edge of the connection cover 7 is fixed to the edge of the heat sink 3 by buckling. In this embodiment, the outer side of the lens plate 1 represents the side of the lens plate 1 away from the light-emitting plate 2; the inner side of the lens plate 1 represents the side of the lens plate 1 close to the light-emitting plate 2. In this embodiment, the outer edge of the connection cover 7 represents the edge of the connection cover 7 away from the center of the light-emitting plate 2, and the inner edge of the connection cover 7 represents the edge of the connection cover 7 close to the center of the light-emitting plate 2.

[0087] The light-emitting board 2 includes a PCB board and a plurality of lamp beads distributed on the PCB board. A plurality of lenses are integrally formed on the lens board 1. The positions of the lenses correspond to the positions of the lamp beads on the light-emitting board 2. The two sides of the radiator 3 are respectively a mounting surface and a heat dissipation surface; the mounting surface of the radiator 3 is in contact with the light-emitting board 2; and the heat dissipation surface of the radiator 3 is provided with heat dissipation fins arranged at intervals. In this embodiment, the radiator 3 is made of an aluminum alloy profile. A wire hole is provided in the middle of the radiator 3; the power supply line 6 of the light-emitting board 2 is led out through the wire hole. The connection between the radiator 3 and the power supply line 6 is sealed. The lens board 1 is made of a material with high light transmittance and has low strength requirements; the connection cover 7 is made of a material with high strength and has no requirements for light transmittance. The connection cover 7 surrounds the outside of the light-emitting area of ​​the light-emitting module and does not hinder the light irradiation path of the light-emitting module. The side of the connection cover 7 close to the light-emitting board 2 presents a sloped structure that gradually moves away from the light-emitting board 2 from the inside to the outside, and the sloped structure helps to further reduce the influence of the connection cover 7 on the light path.

[0088] A solid sealing ring 4 is provided between the lens plate 1 and the mounting surface of the heat sink; the solid sealing ring 4 surrounds the light-emitting board to ensure the sealing of the chamber where the light-emitting board is located. The opposite surfaces of the lens plate 1 and the heat sink, and the outer edge of the solid sealing ring 4, form an annular groove surrounding the solid sealing ring 4. The annular groove is filled with sealant (not shown in the figure). The sealant is solidified after being applied to the annular groove in liquid form. The solid sealing ring 4 and the sealant form a double sealing protection structure, thereby achieving a better sealing effect, effectively preventing the LED module from being damaged due to water seepage, and effectively improving the stability of the light-emitting module during long-term use in harsh environments.

[0089] like Fig. 9As shown, the outer edge of the connection cover 7 is provided with a plurality of buckles 7-1, and the inner edge is provided with an annular pressing edge 7-2. Buckle steps 3-4 are provided at the edge of the heat sink. Buckles are provided on the four straight edges of the connection cover 7. Pressing grooves 1-4 are provided on the outer side surface of the lens plate 1. The pressing grooves 1-4 are annular, and their shapes correspond to the shapes of the pressing edges 7-2 at the inner edge of the connection cover 7. The pressing edges 7-2 on the connection cover 7 are in contact with the pressing grooves 1-4 on the lens plate 1, so that the connection cover 7 applies longitudinal extrusion force and transverse positioning force to the lens plate 1, so that the relative position of the edge of the lens plate 1 and the heat sink remains unchanged.

[0090] This embodiment provides a preferred non-essential technical feature: the pressing grooves 1-4 are located on the inner side of the solid sealing ring 4 (i.e., on the side close to the center of the lens plate 1). This technical feature enables the point where the connecting cover 7 applies the extrusion force to the lens plate 1 to be located on the side close to the center of the lens plate 1 where the solid sealing ring 4 applies the support force to the lens plate 1; under this force condition, the bending moment formed by the extrusion force applied by the connecting cover 7 to the lens plate 1 and the support force applied by the solid sealing ring 4 to the lens plate 1 tends to cause the lens plate 1 to be concave in the middle and warped at the edges. The deformation trend of concave in the middle and warped at the edges helps to make the lens plate 1 more tightly pressed against the light-emitting plate, thereby reducing the risk of deformation and arching of the middle part of the lens plate 1 after long-term use of the light-emitting module.

[0091] The buckles 7-1 on the connection cover 7 form a buckle fit with the buckle steps 3-4 at the corresponding positions on the radiator, so that the edge of the connection cover 7 is tightly connected with the edge of the radiator 3, and the inner edge of the connection cover 7 squeezes the edge of the lens plate 1, thereby indirectly squeezing the lens plate 1 and the radiator 3 to squeeze the solid sealing ring 4, thereby improving the sealing effect.

[0092] This embodiment provides a preferred non-essential technical feature: an annular second sealing groove 1-5 and a third sealing groove 1-6 are provided on the inner side of the lens plate 1. The third sealing groove 1-6 surrounds the outer side of the second sealing groove 1-5. The solid sealing ring 4 is arranged in the second sealing groove 1-5, and is deformed by the extrusion of the bottom surface of the second sealing groove 1-5 and the mounting surface of the radiator. The second sealing groove 1-5 is used to provide a limit for the solid sealing ring 4, thereby increasing the sealing surface between the solid sealing ring 4 and the lens plate 1. The third sealing groove 1-6 is filled with sealant. The third sealing groove 1-6 enables the sealant to form a chimeric structure with the annular groove, thereby improving the stability of the sealant after curing and improving the waterproof effect.

[0093] The present embodiment provides a preferred non-essential technical feature: the cross-sectional profile of the third sealing groove 1-6 is arc-shaped, with a large opening and a shallow depth. Setting the third sealing groove 1-6 as a groove structure with a large opening and a shallow depth can achieve the effect of "ensuring a sufficiently large sealing area while using a small amount of liquid silicone".

[0094] The strengthening fastening structure 5 in this embodiment is the same as the strengthening fastening structure 5 in Embodiment 1, and is specifically as follows:

[0095] like Fig. 9 As shown, the strengthening fastening structure 5 includes two interference fit units. The two interference fit units are symmetrically arranged on opposite sides of the center position of the lens plate 1. The interference fit unit includes a plug-in 5-1 integrally formed on the inner side of the lens plate 1, a positioning groove 5-3 provided on the light-emitting plate, and a slot 5-2 provided on the mounting surface of the heat sink 3. The positions of the plug-in 5-1, the positioning groove 5-3 and the slot 5-2 correspond to each other.

[0096] The connector 5-1 passes through the positioning groove 5-3 on the light-emitting board 2 and is inserted into the corresponding slot 5-2 to form an interference fit. After the connector 5-1 is inserted into the slot 5-2 to the limit position, a pre-tightening pressure is further applied to the lens plate 1, so that the light-emitting board 2 is squeezed by the lens plate 1 and the heat sink 3, and the depth of the connector 5-1 inserted into the slot 5-2 is further increased (the space required for further insertion is provided by the elastic deformation of the lens plate 1, the light-emitting board 2 and the heat sink 3); when the pre-tightening pressure on the lens plate 1 is cancelled, a friction force that resists the recovery of elastic deformation is generated between the interference-fit connector 5-1 and the slot 5-2, so that the lens plate 1 maintains the squeezing force on the light-emitting board 2 and presses the light-emitting board 2 onto the heat sink 3. The shape of the positioning groove 5-3 corresponds to the shape of the connector 5-1. The light-emitting board realizes its own positioning in the light-emitting module through the positioning groove 5-3.

[0097] At the same time, the connector 5-1 can prevent the middle part of the lens plate 1 from swelling and deforming due to heat during use, thereby preventing a gap from being generated between the lens and the light-emitting board 2, and preventing the relative position between each lamp bead and the corresponding lens from changing. Therefore, the structure of the connector 5-1 and the slot 5-2 can keep the lens light distribution of the light-emitting module accurate during long-term use. It can be seen that the reinforced fastening structure 5 provided in this embodiment can not only further improve the deformation resistance of the lens plate 1, but also improve the tightness of the light-emitting board and the heat sink, and can also provide positioning for the light-emitting board to prevent the light-emitting board from shifting in position.

[0098] In addition, the edge of the lens plate 1 and the edge of the radiator 3 form a snap fit through the connecting cover 7, so that the edge of the light-emitting board 2 is also squeezed by the lens plate 1 and the radiator 3, so that the edge of the light-emitting board 2 fits tightly on the radiator 3, ensuring that the light-emitting board 2 has good heat dissipation during long-term use.

[0099] This embodiment provides a preferred non-essential technical feature: the connector 5-1 is rectangular in shape and has a slot 5-1-1 arranged along its length. The slot 5-1-1 forms two deformation plates spaced apart from each other on the connector 5-1. The depth of the slot 5-1-1 is less than the height of the connector 5-1, so that the end of the connector 5-1 close to the lens plate 1 forms a portion not separated by the slot 5-1-1. The depth of the slot 5-1-1 is greater than or equal to 2 mm (preferably equal to 2 mm), and the width is greater than or equal to 0.7 mm (preferably equal to 0.7 mm).

[0100] The connector 5-1 is divided into a deformation portion 5-1-2 corresponding to the position of the slot 5-1-1 and an interference portion 5-1-3 offset from the position of the slot 5-1-1 in the height direction. The deformation portion 5-1-2 has a relatively small rigidity under the action of the slot 5-1-1, and is used to deform when inserted into the slot 5-2, so as to increase the depth of the connector 5-1 inserted into the slot 5-2; the interference portion 5-1-3 has a solid structure and a relatively large rigidity, and is used to form an interference with the side wall of the slot 5-2, so that a friction force that resists deformation can be generated between the lens plate 1 and the heat sink 3. The interference that can generate the friction force that resists deformation between the lens plate 1 and the heat sink 3 is provided by the interference portion 5-1-3 of the connector 5-1.

[0101] This embodiment provides a preferred non-essential technical feature: the two side surfaces of the slot 5-2 and the plug-in connector 5-1 are arranged in opposite directions with an interference fit, and the distance gradually increases from the inside to the outside; this shape can facilitate the plug-in connector 5-1 to be inserted into the slot 5-2 and gradually form an interference fit structure, and it is also helpful for the mold opening of the slot 5-2. The interference amount between the interference portion 5-1-3 on the plug-in connector 5-1 and the slot 5-2 is greater than or equal to 0.1mm.

[0102] This embodiment provides a preferred non-essential technical feature: wavy stripes 5-1-4 are provided on both sides of the connector 5-1. A sealant is provided between the slot 5-2 and the connector 5-1; the sealant enters into the gap formed between the concave area of ​​the stripes 5-1-4 on the connector 5-1 and the slot 5-2, so that the adhesion between the connector 5-1 and the slot 5-2 is further increased on the basis of the friction force, thereby improving the stability of the connection between the connector 5-1 and the heat sink 3. The sealant between the slot 5-2 and the connector 5-1 is formed in the following manner: before the connector 5-1 is inserted into the slot 5-2, liquid sealant is injected into the slot 5-2. In the process of inserting the connector 5-1 into the slot 5-2, the sealant is automatically squeezed into the concave area on the outside of the connector 5-1; after the sealant is cured, the function of bonding the connector 5-1 and the slot 5-2 can be achieved. It should be noted that the sealant between the slot 5-2 and the connector 5-1 is not an essential technical feature. If the connection between the connector 5-1 and the slot 5-2 is sufficiently stable, there is no need to apply sealant in the slot 5-2.

[0103] This embodiment provides a preferred non-essential technical feature: the lens plate 1 is made of PC, which can withstand the pressure of 5000N to 30000N required to be applied when the connector 5-1 is inserted into the slot 5-2.

[0104] Example 4

[0105] A light-emitting module, this embodiment is a further improvement on the basis of the embodiment 1; the difference between this embodiment and the embodiment 1 is that the strengthening fastening structure 5 is different.

[0106] like Fig.10 , 11 As shown in Figures 1 and 12, in this embodiment, part or all of the interference fit unit also includes a groove 5-4 formed on the lens plate 1, and a boss 5-5 integrally formed on the mounting surface of the heat sink 3. The groove 5-4 is an annular structure, specifically surrounding the connector 5-1. The slot 5-2 is arranged at the center position of the outer end surface of the boss 5-5. Since the boss 5-5 protrudes outward on the mounting surface of the heat sink 3, arranging the slot 5-2 on the boss 5-5 helps to increase the depth of the slot 5-2 without thickening the heat sink 3 as a whole, thereby improving the tightness between the connector 5-1 and the slot 5-2.

[0107] The shape of the outer side surface of the boss 5-5 corresponds to the shape of the outer side wall of the groove 5-4; the shape of the positioning groove 5-3 on the light-emitting board 2 corresponds to the shape of the boss 5-5. The boss 5-5 can pass through the positioning groove 5-3 on the light-emitting board 2 and be inserted into the groove 5-4 on the lens board 1. The groove 5-4, the positioning groove 5-3 and the boss 5-5 cooperate to automatically position the heat sink, the light-emitting board and the lens board 1 during assembly; the boss 5-5 is constrained by the groove 5-4 and is positioned in both the horizontal and vertical directions in the horizontal plane; and the light-emitting board 2 is constrained by the boss 5-5 through the positioning groove 5-3 and is positioned in both the horizontal and vertical directions in the horizontal plane.

[0108] After the light-emitting module is assembled, the boss 5-5 is inserted into the groove 5-4 surrounding the connector 5-1; and the connector 5-1 is inserted into the slot 5-2 on the outer end surface of the boss 5-5 and forms an interference fit, thereby forming a multi-layer nested structure, which further improves the tightness of the connection between the lens plate 1 and the heat sink 3; at the same time, the outer side surface of the boss 5-5 contacts the inner side wall of the positioning groove 5-3 on the light-emitting board 2, forming a positioning for the light-emitting board 2, so that the relative position of the light-emitting board 2 and the heat sink 3 remains unchanged, avoiding the light-emitting board 2 from moving off during the subsequent assembly process.

[0109] The boss 5 - 5 in this embodiment is difficult to obtain directly by extrusion molding; therefore, the heat sink in this embodiment can be obtained by die-casting or by milling on the extruded profile.

[0110] The other structures of this embodiment are the same as those of Embodiment 1. Meanwhile, this embodiment may also include the technical features of the sealing structure between the lens plate 1 and the heat sink 3 described in Embodiment 2.

[0111] Example 5

[0112] A light-emitting module, this embodiment is a further improvement on the basis of the embodiment 3; the difference between this embodiment and the embodiment 3 is that the strengthening fastening structure 5 is different.

[0113] The strengthening and fastening structure 5 described in this embodiment is the same as that in the fourth embodiment.

[0114] The structures of this embodiment except the reinforcing fastening structure 5 are the same as those of the third embodiment.

[0115] Example 6

[0116] A light-emitting module, this embodiment is an alternative technical solution to Embodiment 1; the difference between this embodiment and Embodiment 1 is that the reinforcing fastening structure 5 is different.

[0117] In this embodiment, the connector 5 - 1 is disposed on the heat sink 3 ; and the slot 5 - 2 is disposed on the lens plate 1 .

[0118] The other structures of this embodiment are the same as those of embodiment 1. Meanwhile, this embodiment may also include the technical features of the sealing structure between the lens plate 1 and the heat sink 3 recorded in embodiment 2, and the technical features of the strengthening fastening structure 5 recorded in embodiment 4.

[0119] Example 7

[0120] A light-emitting module, this embodiment is an alternative technical solution to embodiment 3; the difference between this embodiment and embodiment 1 is that the strengthening fastening structure 5 is different.

[0121] In this embodiment, the connector 5 - 1 is disposed on the heat sink 3 ; and the slot 5 - 2 is disposed on the lens plate 1 .

[0122] The other structures of this embodiment except the strengthening fastening structure 5 are the same as those of the embodiment 3. Meanwhile, this embodiment may also include the technical features of the strengthening fastening structure 5 recorded in the embodiment 5.

[0123] Example 8

[0124] A light-emitting module, this embodiment is an alternative technical solution to Embodiment 1; the difference between this embodiment and Embodiment 1 is that the reinforcing fastening structure 5 is different.

[0125] like Fig.14 and 15 As shown, in this embodiment, the connector 5-1 is in a round tooth structure; the shapes of the groove 5-4, the positioning groove 5-3, the boss 5-5 and the slot 5-2 correspond to the shape of the connector 5-1, and are all in a circular structure. The outer side of the connector 5-1 is provided with a plurality of glue-containing grooves 5-1-5 evenly distributed along its circumference. The glue-containing grooves 5-1-5 provide space for accommodating sealant between the connector 5-1 and the slot 5-2.

[0126] The side wall of the slot 5-2 is in the shape of a truncated cone with a larger outer side and a smaller inner side. This shape can facilitate the insertion of the connector 5-1 into the slot 5-2 and gradually form an interference fit structure. On the other hand, it also helps in the mold opening of the slot 5-2.

[0127] The connector 5-1 is provided with a center hole 5-1-6. The portion of the connector 5-1 corresponding to the center hole 5-1-6 is the deformation portion 5-1-2, and the other portion is the interference portion 5-1-3. The deformation portion 5-1-2 has a relatively small rigidity under the action of the center hole 5-1-6, and is used to deform when inserted into the slot 5-2, so as to increase the depth of the connector 5-1 inserted into the slot 5-2; the interference portion 5-1-3 has a solid structure and has a relatively large rigidity, and is used to form an interference with the truncated cone-shaped side wall of the slot 5-2, so that friction force resisting deformation can be generated between the lens plate 1 and the heat sink 3; the interference between the interference portion 5-1-3 on the connector 5-1 and the slot 5-2 is greater than or equal to 0.1 mm.

[0128] After the light-emitting module is assembled, the boss 5-5 is inserted into the groove 5-4 around the plug-in 5-1; and the plug-in 5-1 is inserted into the slot 5-2 in the boss 5-5 to form an interference fit. Thus, a multi-layer nested structure is formed, which further improves the tightness of the connection between the lens plate 1 and the heat sink 3; at the same time, the outer side of the boss 5-5 contacts the inner side wall of the positioning groove 5-3 on the light-emitting board 2, forming a positioning for the light-emitting board 2, so that the relative position of the light-emitting board 2 and the heat sink 3 remains unchanged, and the light-emitting board 2 is prevented from moving off during the subsequent assembly process.

[0129] The other structures of this embodiment are the same as those of embodiment 1. Meanwhile, this embodiment may also include the technical features of the sealing structure between the lens plate 1 and the heat sink 3 recorded in embodiment 2, and the technical features of the strengthening fastening structure 5 recorded in embodiment 4.

[0130] Example 9

[0131] A light-emitting module, this embodiment is an alternative technical solution to embodiment 3; the difference between this embodiment and embodiment 3 is that the strengthening fastening structure 5 is different.

[0132] The strengthening and fastening structure 5 described in this embodiment is the same as that in embodiment 8. Meanwhile, this embodiment may also include the technical features described in embodiment 5.

[0133] The other structures of this embodiment except the strengthening fastening structure 5 are the same as those of the embodiment 3. Meanwhile, this embodiment may also include the technical features of the strengthening fastening structure 5 recorded in the embodiment 5.

[0134] Example 10

[0135] A light-emitting module, this embodiment is a further improvement on the basis of the embodiment 8; the difference between this embodiment and the embodiment 8 is that the strengthening fastening structure 5 is different.

[0136] In this embodiment, a plurality of deformation grooves are provided on the plug-in component 5-1. The positions of the deformation grooves correspond to the positions of the center hole 5-1-6; the "correspondence" in this embodiment means that the deformation grooves and the center hole 5-1-6 are within the same length range on the plug-in component 5-1. The deformation grooves are used to further improve the deformation capacity of the area where the center hole on the plug-in component 5-1 is located, so that the plug-in component 5-1 is easily inserted into the slot 5-2 to form an interference fit structure.

[0137] The deformation groove can be provided on the side wall of the central hole 5-1-6 of the plug-in component 5-1; it can also be provided on the outer side of the plug-in component 5-1; it can also penetrate the side wall of the plug-in component 5-1, so that the plug-in component 5-1 forms a plurality of independent deformation pieces arranged in sequence along the circumference of the central hole 5-1-6. This embodiment provides a preferred non-essential technical feature: a plurality of deformation grooves are evenly distributed along the circumference of the central axis of the plug-in component 5-1.

[0138] The other structures of this embodiment are the same as those of Embodiment 8.

[0139] Embodiment 11

[0140] A light-emitting module, this embodiment is a further improvement on the basis of the embodiment 9; the difference between this embodiment and the embodiment 3 is that the strengthening fastening structure 5 is different.

[0141] The reinforcing fastening structure 5 described in this embodiment is the same as that in embodiment 10.

[0142] The other structures of this embodiment except the strengthening fastening structure 5 are the same as those of the embodiment 3. Meanwhile, this embodiment may also include the technical features of the strengthening fastening structure 5 recorded in the embodiment 5.

[0143] Example 12

[0144] A light-emitting module, this embodiment is an alternative technical solution to embodiment 1; the difference between this embodiment and embodiment 3 is that the strengthening fastening structure 5 is different.

[0145] like Fig.16 As shown, in this embodiment, both side surfaces of the connector 5 - 1 are planes.

[0146] The other structures of this embodiment are the same as those of embodiment 1. Meanwhile, this embodiment may also include the technical features of the sealing structure between the lens plate 1 and the heat sink 3 recorded in embodiment 2, and the technical features of the strengthening fastening structure 5 recorded in embodiments 4 and 6.

[0147] Embodiment 13

[0148] A light-emitting module, this embodiment is an alternative technical solution to embodiment 9; the difference between this embodiment and embodiment 3 is that the reinforcing fastening structure 5 is different.

[0149] The reinforcing fastening structure 5 described in this embodiment is the same as that in Embodiment 12.

[0150] The other structures of this embodiment except the strengthening fastening structure 5 are the same as those of the embodiment 3. Meanwhile, this embodiment may also include the technical features of the strengthening fastening structure 5 recorded in the embodiment 5.

[0151] Embodiment 14

[0152] A light-emitting module, this embodiment is an alternative technical solution to the embodiment 3; the difference between this embodiment and the embodiment 3 is that the connection method between the connection cover 7 and the heat sink 3 is different.

[0153] In this embodiment, the outer edge of the connection cover 7 is fixed to the side surface or top surface of the radiator 3 by bolts.

[0154] The other structures of this embodiment are the same as those of embodiment 3. Meanwhile, this embodiment may also include the technical features described in embodiments 5, 7, 9, 11 and 13.

[0155] Embodiment 15

[0156] A light-emitting module, this embodiment is an alternative technical solution to the embodiment 3; the difference between this embodiment and the embodiment 3 is that the connection method between the connection cover 7 and the heat sink 3 is different.

[0157] In this embodiment, the outer edge of the connection cover 7 is fixed to the side surface or top surface of the heat sink 3 by bonding.

[0158] The other structures of this embodiment are the same as those of embodiment 3. Meanwhile, this embodiment may also include the technical features of the strengthening fastening structure 5 recorded in embodiments 5, 7, 9, 11 and 13.

[0159] Example 16

[0160] A light-emitting module, this embodiment is an alternative technical solution to Embodiment 3; the difference between this embodiment and Embodiment 3 is that the structure of the connecting cover 7 is different.

[0161] In this embodiment, the connection cover 7 is not an integrated structure, but a split structure; the connection cover 7 includes a plurality of independent connection elements. Each connection element is fixed to the heat sink 3, and the fixing method includes but is not limited to bolt fixing and adhesive fixing. The connection elements are provided with a pressing edge against the outer side of the lens plate 1. When there are multiple connection elements, different connection elements are distributed at different positions around the lens plate 1, so as to improve the uniformity of the locking force applied by the connection cover 7 to the lens plate 1.

[0162] The other structures of this embodiment are the same as those of embodiment 3. Meanwhile, this embodiment may also include the technical features of the strengthening fastening structure 5 recorded in embodiments 5, 7, 9, 11 and 13.

[0163] In the above embodiments, the description of "top" does not mean the top in the absolute spatial sense, but a relative concept; specifically, the direction from the heat sink 3 to the lens plate 1 is the direction from the bottom to the top. Any position on a component that is farthest from the heat sink 3 is called the top of the component. Any position on a component that is closest to the heat sink 3 is called the bottom of the component.

Claims

1. A light-emitting module based on a central reinforcement fastening structure, comprising a lens plate (1), a light-emitting plate (2) and a heat sink (3) stacked in sequence; characterized in that: It also includes a reinforcing fastening structure (5); the reinforcing fastening structure (5) includes a plurality of interference fit units; the interference fit units include a plug-in connector (5-1) and a slot (5-2); the positions of the plug-in connector (5-1) and the slot (5-2) correspond to each other; the plug-in connector (5-1) passes through the light-emitting panel (2) and is inserted into the corresponding slot (5-2) to form an interference fit; The interference fit unit adopts any of the following two structures: Structure 1: The connector (5-1) is connected to the lens plate (1), and the slot (5-2) is arranged on the heat sink (3); Structure 2: The connector (5-1) is connected to the heat sink (3), and the slot (5-2) is arranged on the lens plate (1).

2. A light-emitting module based on a middle strengthening and fastening structure according to claim 1, characterized in that: Part or all of the interference fit unit further comprises a boss (5-5); when the interference fit unit adopts structure one, the boss (5-5) is arranged on the heat sink (3); when the interference fit unit adopts structure two, the boss (5-5) is arranged on the lens plate (1); and the slot (5-2) is arranged on the outer end surface of the boss (5-5).

3. The light-emitting module based on the middle strengthening fastening structure according to claim 2, characterized in that: The interference fit unit provided with the boss (5-5) further comprises a groove (5-4); when the interference fit unit adopts structure one, the groove (5-4) is opened on the lens plate (1); when the interference fit unit adopts structure two, the groove (5-4) is opened on the heat sink (3); the groove (5-4) surrounds the plug-in component (5-1); the boss (5-5) passes through the light-emitting panel (2) and extends into the groove (5-4).

4. The light-emitting module based on the middle strengthening fastening structure according to claim 1, characterized in that: When the interference fit unit adopts structure one, the connector (5-1) is integrally formed on the lens plate (1); when the interference fit unit adopts structure two, the connector (5-1) is integrally formed on the heat sink (3).

5. The light-emitting module based on the middle strengthening fastening structure according to claim 1, characterized in that: Static friction exists between the plug-in connector (5-1) and the slot (5-2) at the interference fit position; the static friction causes a squeezing force to exist between the lens plate (1) and the light-emitting plate (2).

6. The light-emitting module based on the middle strengthening fastening structure according to claim 1, characterized in that: The outer end surface of the plug connector (5-1) is provided with an intermediate groove (5-1-1); the depth of the intermediate groove (5-1-1) is less than the height of the plug connector (5-1); the plug connector (5-1) is divided into a deformation portion (5-1-2) corresponding to the position of the intermediate groove (5-1-1), and an interference portion (5-1-3) offset from the position of the intermediate groove (5-1-1) in the height direction; the interference portion (5-1-3) forms an interference fit with the slot (5-2), and the interference amount is 0.1 mm to 0.3 mm.

7. The light-emitting module based on the middle strengthening fastening structure according to claim 1, characterized in that: The outer side of the plug connector (5-1) is uneven; and a sealant is provided between the slot (5-2) and the plug connector (5-1).

8. The light-emitting module based on the middle strengthening fastening structure according to claim 1, characterized in that: The plug-in connector (5-1) has a round tooth structure; a center hole (5-1-6) is provided on the plug-in connector (5-1); a portion of the plug-in connector (5-1) corresponding to the center hole (5-1-6) is a deformation portion (5-1-2), and the other portion is an interference portion (5-1-3); the interference portion (5-1-3) forms an interference fit with the slot (5-2).

9. The light-emitting module based on the middle strengthening fastening structure according to claim 8, characterized in that: The side wall of the slot (5-2) is in the shape of a frustum that is larger on the outside and smaller on the inside.

10. The light-emitting module based on the middle strengthening fastening structure according to claim 8, characterized in that: The connector (5-1) is provided with a plurality of deformation grooves; the positions of the deformation grooves correspond to the positions of the central hole (5-1-6).

11. The light-emitting module based on the middle strengthening fastening structure according to claim 1, characterized in that: The number of the interference fit units is an even number; every two interference fit units form a group; and the two interference fit units in the same group are symmetrically arranged on opposite sides of the center position of the lens plate (1).

12. The light-emitting module based on the middle strengthening and fastening structure according to claim 1, characterized in that: The light-emitting panel (2) is provided with a positioning through slot (5-3); the reinforcing fastening structure (5) passes through the positioning through slot (5-3) and provides positioning for the light-emitting panel (2).

13. The light-emitting module based on the middle strengthening and fastening structure according to claim 1, characterized in that: The areas on the side walls of the slot (5-2) that form an interference fit with the plug-in connector (5-1) are all inclined from the inside to the outside in the depth direction of the slot (5-2) and gradually move away from the center of the slot (5-2).

14. A light-emitting module based on a middle reinforcement fastening structure according to any one of claims 1 to 13, characterized in that: The two side surfaces of the light-emitting panel (2) are respectively bonded to the lens panel (1) and the heat sink (3); a sealing structure is provided between the edge of the lens panel (1) and the heat sink (3).

15. A light emitting module based on a middle reinforcement fastening structure according to any one of claims 1 to 13, characterized in that: The heat sink (3) is provided with a first convex edge (3-1) surrounding the lens plate (1); the lens plate (1) is located on the inner side of the first convex edge (3-1); an edge sealing portion (1-1) surrounding the main body of the lens plate (1) is provided at the edge of the lens plate (1); and a solid sealing ring (4) is provided between the edge sealing portion (1-1) and the inner side surface of the first convex edge (3-1).

16. The light-emitting module based on the middle reinforcement fastening structure according to claim 15, characterized in that: The first convex edge (3-1) is provided with a second convex edge (3-2); the edge sealing portion (1-1) is provided with a third convex edge (1-3); the second convex edge (3-2) surrounds the outside of the third convex edge (1-3); an annular groove (8) is formed between the second convex edge (3-2) and the third convex edge (1-3); and the annular groove (8) is filled with sealant.

17. A light-emitting module based on a middle reinforcement fastening structure according to claim 16, characterized in that: The joint formed between the first convex edge (3-1) and the edge of the lens plate (1) is located between the bottoms of the two side walls of the annular groove (8).

18. The light-emitting module based on the middle reinforcement fastening structure according to claim 15, characterized in that: The outer edge of the edge sealing portion (1-1) is provided with a first sealing groove (1-2) surrounding the lens plate (1); a solid sealing ring (4) is embedded in the first sealing groove (1-2); and the solid sealing ring (4) abuts against the inner side surface of the first convex edge (3-1).

19. The light-emitting module based on the middle strengthening fastening structure according to claim 15, characterized in that: The edge of the lens plate (1) presents a stepped structure that gradually decreases from the outside to the inside; the heat sink (3) is provided with an annular clearance groove (3-3); the clearance groove (3-3) is completely or partially aligned with the edge of the lens plate (1); a solid sealing ring (4) is sleeved on the edge of the lens plate (1); the solid sealing ring (4) contacts the clearance groove (3-3) on the heat sink (3), the first sealing groove (1-2) at the edge of the lens plate (1), and the inner side of the first convex edge (3-1); the longitudinal section of the solid sealing ring (4) is L-shaped, and the inner concave portion fits the edge of the lens plate (1).

20. A light emitting module based on a middle reinforcement fastening structure according to any one of claims 1 to 13, characterized in that: It also includes a connection cover (7); the connection cover (7) is fixed to the heat sink (3); and the connection cover (7) is in contact with the outer side surface of the lens plate (1).

21. The light-emitting module based on the middle reinforcement fastening structure according to claim 20, characterized in that: A solid sealing ring (4) is provided between the lens plate (1) and the heat sink (3); the solid sealing ring (4) surrounds the light-emitting plate (2).

22. The light-emitting module based on the middle strengthening fastening structure according to claim 20, characterized in that: The contact area between the connection cover (7) and the outer side surface of the lens plate (1) is located on a side of the solid sealing ring (4) close to the light-emitting plate (2).

23. The light-emitting module based on the middle reinforcement fastening structure according to claim 21, characterized in that: The inner side surface of the lens plate (1) is provided with an annular second sealing groove (1-5) and a third sealing groove (1-6); the solid sealing ring (4) is arranged in the second sealing groove (1-5); the third sealing groove (1-6) surrounds the outer side of the second sealing groove (1-5); and sealing glue is filled between the third sealing groove (1-6) and the heat sink (3).

24. The light-emitting module based on the middle reinforcement fastening structure according to claim 20, characterized in that: The connection cover (7) is annular; a plurality of buckles (7-1) are provided on the outer edge of the connection cover (7); buckle steps (3-4) are provided on the edge of the radiator (3); the buckles (7-1) and the buckle steps (3-4) on the radiator (3) form a buckle fit.

25. The light-emitting module based on the middle reinforcement fastening structure according to claim 20, characterized in that: The side surface of the connection cover (7) close to the light-emitting panel (2) presents an inclined surface structure that gradually moves away from the light-emitting panel (2) from the inside to the outside.

26. The light-emitting module based on the middle reinforcement fastening structure according to claim 20, characterized in that: The inner edge of the connection cover (7) is provided with an annular pressing edge (7-2); the outer side surface of the lens plate (1) is provided with a pressing groove (1-4); the shape of the pressing groove (1-4) corresponds to the shape of the pressing edge (7-2); and the pressing edge (7-2) abuts against the pressing groove (1-4).

27. A light emitting module based on a middle reinforcement fastening structure according to any one of claims 1 to 13, characterized in that: The two sides of the heat sink (3) are respectively a mounting surface and a heat dissipation surface; the mounting surface of the heat sink (3) is in contact with the light-emitting panel (2); the heat dissipation surface of the heat sink (3) is provided with heat dissipation fins arranged at intervals; the heat sink (3) is provided with a wire hole; the power supply line (6) of the light-emitting panel (2) is led out through the wire hole; and the connection between the heat sink (3) and the power supply line (6) is sealed.

28. A light emitting module based on a middle reinforcement fastening structure according to any one of claims 1 to 13, 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 lenses are arranged on the lens board (1); and the position of each lens corresponds to the position of each lamp bead on the light-emitting board (2).

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