A light condensing structure and curing lamp

Abstract

This utility model belongs to the field of ultraviolet curing lamp technology, and particularly relates to a focusing structure and curing lamp. Located on the light-emitting side of an LED lamp panel, it includes a straight lens and an upper lens arranged along the light propagation direction. The bottom surface of the straight lens is the light-incident surface facing the LED lamp panel and is an optical plane, used to receive the light from the LED lamp panel. The top surface of the straight lens is the light-emitting surface, with multiple focusing protrusions arranged in an array. The end faces of the focusing protrusions are arc-shaped, used for initial focusing. The upper lens is a Fresnel lens, with its bottom surface facing the focusing protrusions. It has arc-shaped protrusions and serrated bands arranged concentrically from the center to both sides. The serrated bands are composed of multiple continuous serrated protrusions, and serrated grooves are formed between the arc-shaped protrusions and serrated protrusions. The top surface of the upper lens is the emission surface and is an optical plane, used to refocus the light after the initial focusing to form a light spot. This secondary focusing design forms a light spot with high energy density and good uniformity, effectively improving drying and curing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of ultraviolet curing lamp technology, and particularly relates to a focusing structure and curing lamp. Background Technology

[0002] An ultraviolet (UV) curing lamp is a high-intensity ultraviolet curing device based on semiconductor light-emitting diode (LED) technology. It uses ultraviolet light of a specific wavelength to irradiate the surface of printed materials, stimulating the ink to undergo a cross-linking reaction, thereby achieving instantaneous drying and curing. Due to its advantages such as high efficiency, energy saving, and environmental friendliness, this equipment has been widely used in the printing, coating, and electronic assembly industries.

[0003] As the manufacturing industry pursues higher production efficiency, the speed of printed materials is increasing, placing higher demands on the irradiation intensity and curing efficiency of UV curing lamps. On high-speed production lines, insufficient irradiation intensity can lead to incomplete ink curing, resulting in quality problems such as sticking and scratches.

[0004] Chinese patent document CN220198858U discloses an LED focused ultraviolet curing lamp, including a UV irradiation component disposed inside a lamp housing, comprising a lamp bead fixing base and multiple chip LED boards, the chip LED boards being disposed on the side of the lamp bead fixing base facing the bottom slot of the lamp housing, the chip LED boards being arranged closely together, and the bottom sealing plate being slotted corresponding to the irradiation area of ​​the chip LED boards; a focusing glass covering the surface of the illumination area of ​​each chip LED board.

[0005] In the aforementioned patent document, the drying efficiency of the ink is improved by adding a single layer of focusing glass to the LED board to focus ultraviolet light. However, a single-layer lens is difficult to effectively collect the wide-angle beam of the LED, resulting in a relatively dispersed energy spot. The light is too strong in the central area and weak at the edges, resulting in poor overall uniformity. A large amount of light that is not effectively focused and escapes actually wastes light energy, thus reducing the overall luminous efficiency of the system. Utility Model Content

[0006] The purpose of this invention is to provide a focusing structure and curing lamp to solve the problem that existing curing lamps use a single-layer lens to focus light, resulting in a relatively dispersed and uneven light spot energy, which leads to wasted light energy.

[0007] To achieve the above objectives, this utility model provides a light-focusing structure disposed on the light-emitting side of an LED light panel. It includes a straight lens and an upper lens arranged along the light propagation direction. The bottom surface of the straight lens is the light-incident surface facing the LED light panel and is an optical plane, used to receive light from the LED light panel. The top surface of the straight lens is the light-emitting surface, and it has multiple light-focusing protrusions arranged in an array. The end faces of the light-focusing protrusions are arc-shaped, used for initial light focusing. The upper lens is a Fresnel lens, its bottom surface being the incident surface facing the light-focusing protrusions. It has arc-shaped protrusions and serrated bands arranged concentrically from the center to both sides. The serrated bands are composed of multiple continuous serrated protrusions, and serrated grooves are formed between the arc-shaped protrusions and serrated protrusions. The top surface of the upper lens is the emission surface and is an optical plane, used to refocus the light after initial focusing to form a light spot.

[0008] Furthermore, both the straight lens and the upper lens are made of quartz glass.

[0009] Furthermore, the distance between the highest point of the focusing ridge and the lowest point of the arc-shaped protrusion is 0.8 mm to 1.2 mm.

[0010] Furthermore, the sawtooth band has 6 or 8 sawtooth protrusions.

[0011] Furthermore, the distance between the lowest point of the serrated protrusion and the top surface of the upper lens decreases from the center to both sides.

[0012] The above-mentioned one or more technical solutions in the light-concentrating structure provided by this utility model embodiment have at least the following technical effects: The light from the LED light panel is first focused by multiple focusing convex strips of a straight lens, forming multiple parallel beams that are then emitted. These parallel beams are then focused a second time by a Fresnel lens, converging at the exit surface to form a single light spot with high energy density and good uniformity. This secondary focusing design effectively improves the illumination intensity and light spot quality of the LED light panel without changing the LED power, thereby improving the drying and curing efficiency of the ink.

[0013] A curing lamp includes the aforementioned focusing structure, and further includes a lamp cover housing, a heat sink, and an LED light panel. The heat sink, LED light panel, and focusing structure are sequentially installed inside the lamp cover housing from bottom to top. The bottom surface of the LED light panel is attached to the top surface of the heat sink, and the top surface of the LED light panel is the light-emitting side.

[0014] Furthermore, on the left and right side walls of the lampshade housing, symmetrical mounting grooves, positioning grooves, and limiting grooves are provided sequentially from bottom to top. The height of the heat sink on both sides matches the mounting grooves and is respectively locked in the two mounting grooves. Positioning blocks adapted to the positioning grooves are provided on both sides of the straight lens, and limiting blocks adapted to the limiting grooves are provided on both sides of the upper lens.

[0015] Furthermore, the heat sink contains a first flow channel and a second flow channel that are isolated from each other, and a baffle is provided between the first flow channel and the second flow channel; the rear side wall of the lampshade housing is provided with a first groove, a first sealing groove, a second groove and a second sealing groove, the first groove is connected to the first flow channel and has a first through hole penetrating the bottom of the rear side wall, the first sealing groove is arranged around the outer periphery of the first groove and is used to fix the first sealing ring, the second groove is connected to the second flow channel and has a second through hole penetrating the bottom of the rear side wall, the second sealing groove is arranged around the outer periphery of the second groove and is used to fix the second sealing ring, the front side wall of the lampshade housing is provided with a third groove and a third sealing groove surrounding the third groove, the third groove is connected to the first flow channel and the second flow channel.

[0016] Furthermore, multiple heat dissipation ribs are provided in both the first and second flow channels.

[0017] Furthermore, the top of the heat sink has multiple connecting holes spaced apart along its length on both the left and right sides, and the LED light board is connected to the connecting holes by a locking component to lock it onto the heat sink.

[0018] The curing lamp provided in this embodiment of the present invention has at least the following technical effects: The top surface of the LED light board is in close contact with the bottom surface of the heat sink, so that the heat generated by the LED light board is transferred to the heat sink in a timely manner, effectively reducing heat accumulation in the irradiation area, dissipating heat faster, and improving the working stability and service life of the curing lamp. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the light-concentrating structure provided in an embodiment of the present invention.

[0021] Figure 2 This is a structural diagram of the upper lens in the light-concentrating structure provided in an embodiment of the present invention.

[0022] Figure 3 This is a front view of the light-concentrating structure provided in an embodiment of the present invention.

[0023] Figure 4 This is a structural diagram of the curing lamp provided in an embodiment of the present invention.

[0024] Figure 5 An exploded view of the curing lamp provided in an embodiment of this utility model.

[0025] Figure 6 A cross-sectional view of a curing lamp provided in an embodiment of this utility model.

[0026] Figure 7 This is a cross-sectional view of the lamp cover housing in the curing lamp provided in an embodiment of the present utility model.

[0027] Figure 8 This is a structural diagram of the heat sink in the curing lamp provided in an embodiment of the present invention.

[0028] Figure 9 This is a structural diagram of the first fixing plate in the curing lamp provided in an embodiment of the present utility model.

[0029] Figure 10 Another structural diagram of the first fixing plate in the curing lamp provided in this embodiment of the utility model.

[0030] Figure 11 This is a structural diagram of the second fixing plate in the curing lamp provided in an embodiment of the present utility model.

[0031] In the diagram, 100 is the focusing structure, 110 is the straight lens, 111 is the focusing convex strip, 112 is the positioning block, 120 is the upper lens, 121 is the arc-shaped protrusion, 122 is the serrated protrusion, 123 is the serrated groove, and 124 is the limiting block. 200. Lampshade housing; 210. Heat sink; 211. First flow channel; 212. Second flow channel; 213. Baffle; 214. Heat dissipation ribs; 215. Perforation; 216. Connecting hole; 220. LED light board; 221. Fixing base; 222. LED light strip; 230. Side plate; 231. Mounting groove; 232. Positioning groove; 233. Limiting groove; 240. First fixing plate; 241. First groove; 242. First sealing groove; 243. Second groove; 244. Second sealing groove; 245. First through hole; 246. Second through hole; 247. Cable outlet; 250. Second fixing plate; 251. Third groove; 252. Third sealing groove; 260. Base plate. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0033] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0036] In one embodiment of the curing lamp of this utility model, please refer to... Figures 1 to 11 The curing lamp includes a focusing structure 100, a lamp housing 200, a heat sink 210, and an LED light panel 220. The heat sink 210, the LED light panel 220, and the focusing structure 100 are installed sequentially from bottom to top inside the lamp housing 200. The bottom surface of the LED light panel 220 is attached to the top surface of the heat sink 210, and the top surface of the LED light panel 220 is the light-emitting side.

[0037] Specifically, the bottom surface of the LED light board 220 is in close contact with the heat sink 210, so that the heat generated by the LED light board 220 during operation can be transferred to the heat sink 210 in a timely manner, effectively reducing heat accumulation in the irradiation area, dissipating heat faster, and improving the working stability and service life of the curing lamp.

[0038] The LED light panel 220 includes a mounting base 221 and multiple rows of spaced LED strips 222. The mounting base 221 is fixed to the top of the heat sink 210. The LED strips 222 are mounted on the top of the mounting base 221 and extend along the length of the heat sink 210. Multiple LED chips are mounted on the LED strips 222, and the LED chips emit light in a direction away from the heat sink 210. The LED light panel 220 is based on the electroluminescence principle of semiconductor materials. When current passes through the LED chips, electrons and holes recombine, releasing energy and manifesting it as light, thus achieving light emission.

[0039] Please refer to Figures 1 to 3 In this embodiment, the focusing structure 100 is disposed on the light-emitting side of the LED light panel 220, including a straight lens 110 and an upper lens 120 arranged along the light propagation direction. The bottom surface of the straight lens 110 is the light-incident surface facing the LED light panel 220 and is an optical plane for receiving light from the LED light panel 220. The top surface of the straight lens 110 is the light-emitting surface and is provided with a plurality of focusing protrusions 111 arranged in an array. The end face of the focusing protrusions 111 is arc-shaped and used for initial focusing. Secondary focusing; the upper lens 120 is a Fresnel lens, the bottom surface of which is the incident surface facing the focusing protrusion 111. It has arc-shaped protrusions 121 and serrated bands arranged concentrically from the center to both sides. The serrated band is composed of multiple continuous serrated protrusions 122, and serrated grooves 123 are formed between the arc-shaped protrusions 121 and the serrated protrusions 122. The top surface of the upper lens 120 is the exit surface and is an optical plane, used to focus the light that has been focused by the primary focusing to form a light spot.

[0040] Specifically, the light emitted from the LED light panel 220 first enters the straight lens 110 from the bottom surface, and is initially focused by the array of focusing protrusions 111 on the top of the straight lens 110, concentrating the scattered light into multiple parallel beams. These parallel beams enter the Fresnel lens 120, and undergo secondary optical integration through a specific optical structure formed by the arc-shaped protrusion 121 and the serrated strip at the bottom. Finally, they converge from the exit surface of the top of the Fresnel lens 120 to form a light spot with high energy density and good uniformity. This dual-stage focusing design significantly improves the irradiation intensity and light spot quality without changing the power of the LED light panel. Compared to a single-layer straight lens focusing structure, the drying effect can be more than doubled, effectively improving the drying and curing efficiency of the ink. Furthermore, it effectively reduces the energy consumption of the curing lamp while achieving the same curing effect.

[0041] Preferably, both the straight lens 110 and the upper lens 120 are made of quartz glass. Specifically, quartz glass has high light transmittance and excellent thermal stability, ensuring efficient and stable light transmission.

[0042] Please refer to Figure 3 The distance between the highest point of the focusing ridge 111 and the lowest point of the arc-shaped protrusion 121 is 0.8 mm to 1.2 mm. Specifically, the distance between the highest point of the focusing ridge 111 of the straight lens 110 and the lowest point of the arc-shaped protrusion 121 of the Fresnel lens 120 is preferably 1 mm, so that the beam converged by the straight lens 110 can stably enter the Fresnel lens 120 and reduce scattering loss.

[0043] Please refer to Figure 3 The distance between the lowest point of the serrated protrusion 122 and the top surface of the upper lens 120 decreases from the center to both sides. Specifically, when the parallel beam converged by the straight lens 110 is incident on the Fresnel lens 120, weak reflection, refraction, and scattering occur at the interface between the arcuate protrusion 121 at its bottom and the serrated band structure. By thinning the upper lens 120 from the center to the edge regions on both sides, the transmission path of light within the glass in the edge regions is shortened. This reduces the path loss of light and allows the edge regions to guide more light to the incident surface, ultimately improving the overall energy and edge uniformity of the converged light spot.

[0044] Please refer to Figure 2 The number of serrated protrusions 122 in the serrated band is 6 or 8. Specifically, in one embodiment, the Fresnel lens 120 includes 8 serrated protrusions 122, in which case the lower straight lens 110 is provided with 11 focusing protrusions 111, and the LED light panel 220 is provided with 11 rows of LED light strips 222 aligned with the focusing protrusions 111. In another embodiment, the Fresnel lens 120 has 6 serrated protrusions 122, and the straight lens 110 and the LED light panel 220 are respectively provided with 9 focusing protrusions 111 and 9 rows of LED light strips 222, ensuring a one-to-one correspondence between the optical elements at each level.

[0045] Please refer to Figure 1 Figure 5 to Figure 7 On the left and right side walls of the lampshade housing 200, symmetrical mounting grooves 231, positioning grooves 232, and limiting grooves 233 are provided from bottom to top. The height of the heat sink 210 on both sides matches the mounting grooves 231 and is respectively locked in the two mounting grooves 231. The straight lens 110 has positioning blocks 112 on both sides that are adapted to the positioning grooves 232, and the upper lens 120 has limiting blocks 124 on both sides that are adapted to the limiting grooves 233.

[0046] Specifically, the lampshade housing 200 is formed by side plates 230 on the left and right sides, a second fixing plate 250 and a first fixing plate 240 arranged in parallel front and back, and a bottom plate 260, forming an installation cavity inside and a light-emitting window at the top.

[0047] The inner surfaces of the two parallel side plates 230 are provided with symmetrical mounting grooves 231, positioning grooves 232, and limiting grooves 233 from bottom to top. The height of the heat sink 210 matches the mounting groove 231. During installation, the two sides of the heat sink 210 are inserted into the mounting groove 231 for initial fixation. Then, multiple bolts are used to pass through the outer walls of the side plate 230 and the heat sink 210 along the length of the side plate 230 to lock the heat sink 210 onto the side plate 230, thereby enhancing the installation stability of the heat sink 210. The bottom surface of the LED light board 220 is attached to the top surface of the heat sink 210. Subsequently, the positioning blocks 111 on both sides of the straight lens 110 are installed into the positioning groove 232, and then the Fresnel lens 120 is installed in the limiting groove 233 through the limiting block 124. When the power is turned on, the light from the LED light panel 220 passes through the straight lens 110 and the Fresnel lens 120 in sequence, and is emitted through the top light-emitting window and converged into a light spot, illuminating the surface of the printed material.

[0048] Multiple sets of closely arranged LED light panels 220, straight lenses 110, and Fresnel lenses 120 are arranged along the length of the side plate 230 within the mounting cavity, forming a modular optical unit. Multiple straight lenses are closely arranged and installed within the positioning groove 232, and multiple Fresnel lenses 120 are closely arranged and installed within the limiting groove 233. This structure supports the requirements of printing materials of different widths and allows for flexible configuration of curing lamps of different sizes.

[0049] Because there is a gap between the straight lens 110 and the Fresnel lens 120, there will be no interference during installation or replacement. When any LED light panel 220, straight lens 110, or Fresnel lens 120 is damaged, the corresponding structure can be replaced independently, improving the maintenance efficiency of the curing lamp and reducing the cost of use.

[0050] Preferably, both the lampshade housing 200 and the heat sink 210 are made of metal. Metal has good thermal conductivity, which better transfers the heat generated by the LED light board 220 during operation and improves the heat dissipation speed.

[0051] Please refer to Figures 8 to 11The heat sink 210 has a first flow channel 211 and a second flow channel 212 that are isolated from each other, and a baffle 213 is provided between the first flow channel 211 and the second flow channel 212. The rear side wall 240 of the lamp cover housing 200 is provided with a first groove 241, a first sealing groove 242, a second groove 243 and a second sealing groove 244. The first groove 241 is connected to the first flow channel 211 and is provided with a first through hole 245 penetrating the bottom of the rear side wall 240. The first sealing groove 242 is arranged around the outer periphery of the first groove 241 and is used to fix the first sealing ring. The second groove 243 is connected to the second flow channel 212 and is provided with a second through hole 246 penetrating the bottom of the rear side wall 240. The second sealing groove 244 is arranged around the outer periphery of the second groove 243 and is used to fix the second sealing ring. The front side wall 250 of the lamp cover housing 200 is provided with a third groove 251 and a third sealing groove 252 surrounding the third groove 251. The third groove 251 is connected to the first flow channel 211 and the second flow channel 212.

[0052] Specifically, the first through hole 245 and the second through hole 246 connect to an external water cooling system. When cold water is input into the water cooling system through the first through hole 245, the cold water sequentially passes through the first groove 241, the first flow channel 211, the third groove 251, the second flow channel 212, and the second groove 243, and then flows out from the second through hole 246. The flowing cold water carries away the heat generated by the LED light board 220 during operation, improving heat dissipation performance. The rear side wall of the lamp cover housing 200 is a first fixing plate 240, on which the first sealing groove 242 and the second sealing groove 244 are respectively equipped with sealing rings to seal the assembly gap between the heat sink 210 and the first groove 241 and the second groove 242 in the first fixing plate 240; the front side wall is a second fixing plate 250, on which the third sealing groove 252 is equipped with a third sealing ring to seal the assembly gap between the heat sink 210 and the third groove 251 in the second fixing plate 250. The three-layer sealing structure effectively prevents cold water leakage.

[0053] Please refer to Figure 8 Preferably, both the first flow channel 211 and the second flow channel 212 are provided with multiple heat dissipation ribs 214. Specifically, the heat dissipation ribs 214 and the heat sink 210 are integrally formed of metal, which efficiently transfers heat and increases the heat exchange area between the heat sink 210 and the cold water, thereby further improving heat dissipation efficiency.

[0054] Please refer to Figure 5 and Figure 8 The top of the heat sink 210 has multiple connecting holes 216 spaced along its length on both the left and right sides. The LED light board 220 is locked to the heat sink by connecting the connecting holes 216 through locking components. Specifically, the top surface of the heat sink 210 has connecting holes 216, and bolts pass through the fixing base 221 and connect to the connecting holes 216 to lock the LED light board 220 onto the heat sink 210.

[0055] Please refer to Figure 6 A wiring cavity is provided between the base plate 260 of the lamp housing and the heat sink 210 to accommodate the control components of the curing lamp (not shown in the figure). The baffle 213 of the heat sink 210 has multiple through holes 215 running vertically along its length. Cables from multiple LED light panels 220 pass through the through holes 215 in the heat sink and then enter the wiring cavity to connect with the control components. The first fixing plate 240 has a cable exit section 247 that connects to the wiring cavity. The wires of the control components extend to the outside through the cable exit section 247 and connect to an external power source.

[0056] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A light-concentrating structure disposed on the light-emitting side of an LED light panel, characterized in that, This includes a straight lens and an upper lens positioned along the direction of light propagation. The bottom surface of the straight lens is the light-incident surface facing the LED light panel and is an optical plane, used to receive the light from the LED light panel. The top surface of the straight lens is the light-emitting surface, and it is provided with multiple light-focusing protrusions arranged in an array. The end face of the light-focusing protrusions is arc-shaped, used for initial light focusing. The upper lens is a Fresnel lens, with its bottom surface being the incident surface facing the light-gathering protrusion. It has arc-shaped protrusions and serrated bands arranged concentrically from the center to both sides. The serrated band is composed of multiple continuous serrated protrusions, and serrated grooves are formed between the arc-shaped protrusions and serrated protrusions. The top surface of the upper lens is the exit surface and is an optical plane, used to refocus the light rays after the initial focusing to form a light spot.

2. The light-concentrating structure according to claim 1, characterized in that: Both the straight lens and the upper lens are made of quartz glass.

3. The light-concentrating structure according to claim 1, characterized in that: The distance between the highest point of the focusing ridge and the lowest point of the arc-shaped protrusion is 0.8 mm to 1.2 mm.

4. The light-concentrating structure according to claim 3, characterized in that: The sawtooth band has 6 or 8 sawtooth protrusions.

5. The light-concentrating structure according to claim 4, characterized in that: The distance between the lowest point of the serrated protrusion and the top surface of the upper lens decreases from the center to both sides.

6. A curing lamp, comprising the focusing structure according to any one of claims 1-5, characterized in that: It also includes a lampshade housing, a heat sink, and an LED light panel. The heat sink, the LED light panel, and the focusing structure are installed sequentially from bottom to top inside the lampshade housing. The bottom surface of the LED light panel is attached to the top surface of the heat sink, and the top surface of the LED light panel is the light-emitting side.

7. The curing lamp according to claim 6, characterized in that: The left and right walls of the lampshade housing are provided with symmetrical mounting grooves, positioning grooves and limiting grooves from bottom to top. The height of the heat sink on both sides matches the mounting grooves and is respectively locked in the two mounting grooves. The straight lens is provided with positioning blocks that are adapted to the positioning grooves on both sides, and the upper lens is provided with limiting blocks that are adapted to the limiting grooves on both sides.

8. The curing lamp according to claim 6, characterized in that: The heat sink has a first flow channel and a second flow channel that are isolated from each other, and a baffle is provided between the first flow channel and the second flow channel. The rear sidewall of the lampshade housing is provided with a first groove, a first sealing groove, a second groove, and a second sealing groove. The first groove communicates with the first flow channel and has a first through hole penetrating the bottom of the rear sidewall. The first sealing groove is arranged around the outer periphery of the first groove and is used to fix the first sealing ring. The second groove connects to the second flow channel and has a second through hole penetrating the bottom of the rear sidewall. The second sealing groove is arranged around the outer periphery of the second groove for fixing the second sealing ring. The front sidewall of the lampshade housing is provided with a third groove and a third sealing groove surrounding the third groove, the third groove connecting the first flow channel and the second flow channel.

9. The curing lamp according to claim 8, characterized in that: Both the first and second flow channels are equipped with multiple heat dissipation ribs.

10. The curing lamp according to claim 6, characterized in that: The top of the heat sink has multiple connection holes spaced apart along its length on the left and right sides. The LED light board is connected to the connection holes by a locking device to lock it onto the heat sink.

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