Optical lens and illuminating spotlight thereof

Abstract

The invention relates to an optical lens and a lighting spotlight thereof, and relates to the field of lighting equipment, the optical lens comprises a shell, and two ends of the shell are respectively provided with a large mounting port and a small mounting port; the lens is arranged in the shell and blocks the large mounting opening, and an annular space is reserved between the inner side wall of the shell and the outer side wall of the lens; the heat dissipation structure is arranged in an annular space between the inner side wall of the shell and the outer side wall of the lens, the refrigeration end of the heat dissipation structure is attached to the outer side wall of the lens, the heat dissipation end of the heat dissipation structure penetrates through the shell and extends out of the shell, and heat in the lens is transferred to the heat dissipation end through the refrigeration end, making contact with the heat dissipation structure, of the heat dissipation structure. The side-by-side direction is outside the housing. Heat in the lens can be transferred to the heat dissipation end through the refrigeration end of the heat dissipation structure in contact with the lens and is discharged to the outside of the shell, so that the lens is cooled, and the optical performance and the service life of the lens are not easily affected by the heat.

Description

Technical Field

[0001] The present application relates to the field of lighting equipment, and in particular to an optical lens and a lighting spotlight thereof. Background Art

[0002] KA store lighting refers to the lighting application of high-end places such as retail stores, supermarkets, clothing stores in major shopping malls. It is necessary to effectively display goods and attract customers' attention. Through reasonable light arrangement and lighting effects, the product characteristics and brand image in the store are highlighted to attract customers to shop in the store. The lamps must have good color reproduction, flexibility and adjustability, safety and comfort, energy saving and environmental protection.

[0003] According to the light source type and structure type of KA spotlights, they can be divided into reflector optics, reflector + light guide optics, and single lens optics. Among them, the application of lenses in KA spotlights has become the mainstream, and its good light control ability and light output efficiency have gradually become the mainstream optical products in the KA spotlight market.

[0004] Regarding the above-mentioned related technologies, since the LED light source converts most of the electrical energy into heat energy when working, part of the heat will be transferred to the lens. The accumulated heat may cause thermal expansion of the lens material, which may easily affect the optical performance and life of the lens. Summary of the invention

[0005] In order to dissipate heat from a lens, the present application provides an optical lens and a lighting spotlight thereof.

[0006] In the first aspect, the present application provides a lighting spotlight, which adopts the following technical solution: Lighting spotlights, including: The housing has a large installation opening and a small installation opening at two ends thereof; A lens is disposed in the housing and blocks the large installation opening, and an annular space is left between the inner wall of the housing and the outer wall of the lens; The heat dissipation structure is arranged in the annular space between the inner wall of the shell and the outer wall of the lens. The cooling end of the heat dissipation structure is in contact with the outer wall of the lens. The cooling end of the heat dissipation structure penetrates the shell and extends out of it. The heat inside the lens is transferred to the cooling end through the cooling end of the heat dissipation structure in contact with the lens, and is discharged to the outside of the shell.

[0007] By adopting the above technical solution, the heat inside the lens can be transferred to the heat dissipation end through the cooling end of the heat dissipation structure in contact with it, and discharged to the outside of the shell, thereby dissipating the heat of the lens and preventing the heat from easily affecting the optical performance and life of the lens.

[0008] Optionally, an incident groove is provided at one end of the lens close to the LED lamp, the bottom of the incident groove is a first incident surface, the inner wall of the incident groove is a second incident surface, an exit groove is provided at one end of the lens away from the incident groove, the middle position in the exit groove is set as the first exit surface, the outer position in the exit groove is set as the second exit surface, and the arc-shaped outer wall of the lens is a total reflection surface.

[0009] By adopting the above technical solution, the incident light emitted by the LED lamp enters the lens through the incident surface, is reflected to the exit surface by the total reflection surface, and is refracted by the exit surface and then emitted.

[0010] Optionally, the diameter of the incident groove is 16.85 to 17.15 mm, the distance between the two opposite end faces of the lens is 20.8 to 21.2 mm, the diameter of the largest part of the lens is 44.8 to 45.2 mm, and the distance between the center of the incident groove and the end face of the lens close to the LED lamp is 7.6 to 7.8 mm.

[0011] Optionally, the heat dissipation structure includes a plurality of arc-shaped semiconductor cooling plates arranged on the inner wall of the shell, a heat-conducting rod arranged at the cooling end of the semiconductor cooling plates, an arc-shaped heat-conducting plate arranged at the end of the heat-conducting rod away from the semiconductor cooling plates, and heat dissipation fins arranged at the heat dissipation end of the semiconductor cooling plates. The plurality of semiconductor cooling plates are arranged circumferentially along the inner wall of the shell, one side of the arc-shaped heat-conducting plate is in contact with the outer wall of the lens, and the heat dissipation fins penetrate the shell and extend to the outside of the shell.

[0012] By adopting the above technical solution, the heat inside the lens can be conducted to the heat-conducting rod through the arc-shaped heat-conducting sheet in contact with the lens, and transferred along the heat-conducting rod to the cooling end of the semiconductor refrigeration plate. The cooling end of the semiconductor refrigeration plate can absorb heat when working, and the heat dissipation end of the semiconductor refrigeration plate can be transferred to the outside of the housing through the heat dissipation fins.

[0013] Optionally, an L-shaped plate is provided on the end surface of the semiconductor refrigeration plate, the L-shaped plate is fitted with the inner wall of the outer shell, and a plurality of screws are provided between the L-shaped plate and the outer shell.

[0014] By adopting the above technical solution, the screws are used to detachably connect the L-shaped plate and the shell, which is convenient for disassembly, assembly and maintenance of the semiconductor cooling plate.

[0015] In the second aspect, the present application also discloses a lighting spotlight, comprising the above-mentioned optical lens, and also comprising a base arranged at the small mounting opening of the shell, the base being provided with an LED lamp for illuminating the lens, a plurality of L-shaped plug-ins being provided at one end of the shell close to the base, the base being provided with a slot for plugging and cooperating with the L-shaped plug-ins at one end of the shell close to the shell, the base being provided with an L-shaped slide groove connected to the slot, the L-shaped slider being plugged and cooperating with the L-shaped slide groove, the L-shaped slide groove extending circumferentially along the vertical center line of the base, and the horizontal section of the L-shaped plug-in block being provided with a guiding slope for cooperating with the side wall of the L-shaped slide groove.

[0016] By adopting the above technical solution, when installing the base and the shell, the L-shaped plug is aligned with the slot and inserted, and then the base and the shell are rotated relative to each other to make the L-shaped plug slide into the L-shaped groove. Since the thickness of the horizontal section of the L-shaped slider is slightly larger than the thickness of the horizontal section of the L-shaped groove, the L-shaped plug can be interference fit with the L-shaped groove to achieve circumferential fixation between the base and the shell.

[0017] Optionally, a plurality of square openings are provided at the large installation opening of the shell, the square openings pass through the end of the shell, a plurality of buckles for sealing the square openings are provided at the end of the shell away from the base, and a slot for engaging with the buckles is provided on the outer side of the lens.

[0018] By adopting the above technical solution, a detachable fixed connection between the housing and the lens can be achieved, which facilitates the disassembly, assembly and maintenance of the lens.

[0019] Optionally, an air inlet is opened in the middle of the base and runs through the inner and outer sides thereof, a cooling fan is arranged on the side wall of the air inlet, and a space is left between two adjacent heat conducting rods. When the cooling fan is working, the air outside the outer shell is sucked into the inner shell through the air inlet and discharged along the square opening.

[0020] By adopting the above technical solution, when the cooling fan is working, the air outside the shell is sucked into the shell through the air inlet, which can drive the heat of the part of the lens that is not in contact with the arc-shaped heat conductive plate, and then the air carrying the heat is discharged from the shell from the square opening.

[0021] Optionally, an annular guide portion is provided on the outer wall of the shell near the large installation opening, the cross-section of the annular guide portion is arc-shaped, and the annular guide portion guides the air discharged from the square opening to the position where the heat dissipation fins protrude from the shell.

[0022] By adopting the above technical solution, after the air in the shell is discharged from the square opening, this part of the air will first touch the annular guide part, and under the guidance of the annular guide part, this part of the hot air can be guided to the position where the heat dissipating fins protrude from the shell, and can blow away the heat emitted from the heat dissipating fins together.

[0023] Optionally, a plurality of connecting strips are provided on the inner side of the base, a common mounting frame is provided at one end of the plurality of connecting strips away from the base, the LED lamp is arranged in the mounting frame, the heat dissipation end of the LED lamp faces a heat dissipation fan, and a space is left between the LED lamp and the heat dissipation fan.

[0024] By adopting the above technical solution, the setting of the connecting strip provides conditions for the installation of the installation frame, and the setting of the installation frame facilitates the installation of the LED lamp, and the air entering the shell can drive the heat at the heat dissipation end of the LED lamp.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The heat inside the lens can be transferred to the heat dissipation end through the cooling end of the heat dissipation structure in contact with it, and discharged to the outside of the housing, thereby dissipating the heat of the lens, so that the heat is not easy to affect the optical performance and life of the lens; 2. When the cooling fan is working, the air outside the housing is sucked into the housing through the air inlet, which can drive the heat of the part of the lens that is not in contact with the arc-shaped heat conductive sheet, and then the air carrying the heat is discharged from the housing through the square opening; 3. After the air in the shell is discharged from the square opening, this part of the air will first touch the annular guide part, and under the guidance of the annular guide part, this part of the hot air can be guided to the position where the heat sink fins protrude from the shell, and the heat emitted from the heat sink fins can be blown away together. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an optical lens and its lighting spotlight; Figure 2 It is an exploded view of an optical lens and its lighting spotlight; Figure 3 The invention discloses a cross-sectional view of an optical lens and a lens of a lighting spotlight thereof; Figure 4 It is a top view of an optical lens and a housing of a lighting spotlight; Figure 5 It is a cross-sectional view of an optical lens and a housing of a lighting spotlight; Figure 6 It is a structural schematic diagram of an optical lens and a heat dissipation structure of a lighting spotlight; Figure 7 The invention discloses a structural schematic diagram of an optical lens and an L-shaped plug-in block of a lighting spotlight.

[0027] Explanation of the reference numerals: 1. housing; 11. large mounting opening; 12. small mounting opening; 13. square opening; 14. buckle; 15. annular guide portion; 16. L-shaped plug block; 161. guiding slope; 2. lens; 21. incident slot; 211. first incident surface; 212. second incident surface; 22. exit slot; 221. first exit surface; 222. second exit surface; 23. total reflection surface; 24. slot; 3. base; 31. LED lamp; 32. connecting strip; 33. mounting frame; 34. air inlet; 35. cooling fan; 36. slot; 37. L-shaped slide; 4. heat dissipation structure; 41. semiconductor cooling plate; 411. L-shaped plate; 412. screw; 42. heat conducting rod; 43. arc-shaped heat conducting plate; 44. heat dissipation fin. DETAILED DESCRIPTION

[0028] The following is combined with Figures 1 to 7 This application is described in further detail.

[0029] The present application embodiment discloses an optical lens. Figure 1 and Figure 2 The optical lens includes a shell 1 and a lens 2. The shell 1 is a truncated cone-shaped object with large and small ends, and its interior is hollow. The two ends of the shell 1 respectively have a large installation opening 11 and a small installation opening 12. The lens 2 is located inside the shell 1. The lens 2 is also a truncated cone-shaped object with large and small ends. The size of the lens 2 is smaller than that of the shell 1. The large end of the lens 2 can block the large installation opening 11 of the shell 1. An annular space is left between the inner wall of the shell 1 and the outer wall of the lens 2, and the lens 2 and the shell 1 are clamped with each other.

[0030] Reference Figure 3 Preferably, an incident groove 21 is provided at one end of the lens 2 close to the LED lamp 31, the cross section of the incident groove 21 is circular, the bottom of the incident groove 21 is a first incident surface 211, the first incident surface 211 is arc-shaped, and the middle of the first incident surface 211 is convex toward a position away from the middle of the lens 2, and the inner side wall of the incident groove 21 is a second incident surface 212. The first incident surface 211 and the second incident surface 212 provided in the incident groove 21 surround the light source to receive light incident from any angle of the light source, thereby increasing the light extraction efficiency.

[0031] An exit groove 22 is provided at one end of the lens 2 away from the incident groove 21, the middle position in the exit groove 22 is set as a first exit surface 221, and the outer position in the exit groove 22 is set as a second exit surface 222. The first exit surface 221 and the second exit surface 222 are both set in an arc shape, the middle of the first exit surface 221 is convex toward the position away from the middle of the lens 2, and the second exit surface 222 is concave inward along the position close to the middle of the lens 2. The exit groove 22 can reduce the overall volume of the lens 2, and divide the exit surface into the first exit surface 221 and the second exit surface 222. The shapes of the first exit surface 221 and the second exit surface 222 can be adjusted respectively to achieve the adjustment of all the exiting light rays, so as to simplify the design process of the exit surface. In addition, the arc-shaped outer side wall of the lens 2 is a total reflection surface 23.

[0032] Reference Figure 2 and Figure 3 The LED lamp 31 of the present application is directly opposite to the incident surface. The incident light emitted by the LED lamp 31 enters the interior of the lens 2 through the incident surface, is reflected to the exit surface by the total reflection surface 23, and is then refracted by the exit surface and emitted. The optical path of the lens 2 of the present application adopts a cross-light design to reduce light loss and improve efficiency; and the optical surface of the lens 2 is fully transparent, and the surfaces of the first incident surface 211, the first exit surface 221, and the second exit surface 222 are all Fermat spiral bead point design, achieving high light extraction efficiency and high central light intensity effect.

[0033] The diameter of the incident groove 21 is 16.85 to 17.15 mm. In this embodiment, the optimal diameter of the incident groove 21 is 17 mm. The distance between the two opposite end faces of the lens 2 is 20.8 to 21.2 mm. In this embodiment, the optimal distance between the two opposite end faces of the lens 2 is 21 mm. The diameter of the largest part of the lens 2 (i.e., the large end of the lens 2) is 44.8 to 45.2 mm. In this embodiment, the optimal diameter of the largest part of the lens 2 (i.e., the large end of the lens 2) is 45 mm. The diameter of the smallest part of the lens 2 (i.e., the small end of the lens 2) is 19.95 to 20.25 mm. In this embodiment, the optimal diameter of the smallest part of the lens 2 (i.e., the small end of the lens 2) is 20.1 mm. The distance between the center of the incident groove 21 and the end face of the lens 2 close to the LED lamp 31 is 7.6 to 7.8 mm. In this embodiment, the optimal distance between the center of the incident groove 21 and the end face of the lens 2 close to the LED lamp 31 is 7.7 mm.

[0034] Reference Figure 2 Preferably, the optical lens of the present application also includes a heat dissipation structure 4, which is located in the annular space between the inner wall of the outer shell 1 and the outer wall of the lens 2, the cooling end of the heat dissipation structure 4 is in contact with the outer wall of the lens 2, and the heat dissipation end of the heat dissipation structure 4 passes through the outer shell 1 and extends out of it.

[0035] The efficiency of the LED lamp 31 in converting electrical energy into light energy is not 100%, and the rest of the electrical energy is dissipated in the form of heat. Part of the heat will be transferred to the lens 2. The accumulated heat may cause thermal expansion of the lens 2 material, which may easily affect the optical performance and life of the lens 2. Based on this, the heat inside the lens 2 can be transferred to the heat dissipation end through the cooling end of the heat dissipation structure 4 in contact with it, and discharged to the outside of the housing 1, thereby dissipating the heat of the lens 2, so that the heat is not easy to affect the optical performance and life of the lens 2.

[0036] Reference Figure 4 and Figure 5 Further, the heat dissipation structure 4 includes a plurality of semiconductor cooling sheets 41, a heat conducting rod 42, an arc-shaped heat conducting sheet 43 and a heat dissipation fin 44. In this embodiment, the semiconductor cooling sheet 41 is arranged in an arc shape and the number is three. The three semiconductor cooling sheets 41 are arranged circumferentially along the inner side wall of the housing 1, and a gap is left between two adjacent semiconductor cooling sheets 41. The cooling end of the semiconductor cooling sheet 41 faces the lens 2, and the heat dissipation end of the semiconductor cooling sheet 41 faces the inner side wall of the housing 1. A plurality of heat conducting rods 42 are installed at the cooling end of the semiconductor cooling sheet 41. The arc-shaped heat conducting sheet 43 is fixedly connected to one end of the heat conducting rod 42 away from the semiconductor cooling sheet 41. One end of the arc-shaped heat conducting sheet 43 away from the heat conducting rod 42 is in contact with the outer side wall of the lens 2. The heat dissipation fin 44 is installed at the heat dissipation end of the semiconductor cooling sheet 41. The heat dissipation fin 44 penetrates the housing 1 and extends to the outside of the housing 1. In this embodiment, the heat conducting rod 42 and the arc-shaped heat conducting sheet 43 are both made of copper metal and have good thermal conductivity.

[0037] When the semiconductor refrigeration sheet 41 is working, the temperature of its cooling end will decrease, and the heat will be transferred to its heat dissipation end, so that the temperature of the heat dissipation end will increase. Specifically for the present application, the heat inside the lens 2 can be conducted to the heat-conducting rod 42 through the arc-shaped heat-conducting sheet 43 in contact with it, and transferred to the cooling end of the semiconductor refrigeration sheet 41 along the heat-conducting rod 42, and the cooling end of the semiconductor refrigeration sheet 41 can absorb heat when working, so that the temperature of the cooling end is reduced, and the heat is transferred to the heat dissipation end, so that the temperature of the heat dissipation end is increased, and the heat of the heat dissipation end of the semiconductor refrigeration sheet 41 can be transferred to the outside of the housing 1 through the heat dissipation fins 44, so as to achieve heat dissipation of the lens 2.

[0038] It should be noted that the contact surface between the arc-shaped heat-conducting sheet 43 and the outer wall of the lens 2 needs to be processed to be smooth and coated with a thin layer of thermal grease to improve the heat conduction efficiency.

[0039] The present application also discloses a lighting spotlight, including the above-mentioned optical lens and a base 3 , which is installed at the small installation opening 12 of the housing 1 , and an LED lamp 31 is installed on the base 3 , and the LED lamp 31 is used to illuminate the lens 2 .

[0040] Reference Figure 2A plurality of connecting strips 32 are fixed to the inner side of the base 3, and a same mounting frame 33 is fixed to one end of the plurality of connecting strips 32 away from the base 3. Both ends of the mounting frame 33 are set with openings. The mounting frame 33 is used to mount the LED lamp 31, and the emission end of the LED lamp 31 faces the lens 2. The setting of the connecting strips 32 provides conditions for the installation of the mounting frame 33, and the setting of the mounting frame 33 facilitates the installation of the LED lamp 31, so that the emission end of the LED lamp 31 can normally irradiate the light source to the lens 2.

[0041] Preferably, a plurality of square openings 13 are provided at the large installation opening 11 of the housing 1. In the present embodiment, the number of the square openings 13 is three. The square openings 13 pass through the end of the housing 1. The end of the housing 1 away from the base 3 is integrally formed with a plurality of buckles 14 for sealing the openings of the square openings 13. The number of the buckles 14 is the same as the number of the square openings 13. A card slot 24 for engaging with the buckles 14 is provided on the outer side of the lens 2.

[0042] Since the buckle 14 on the housing 1 can be engaged with the slot 24 on the lens 2 , a detachable fixed connection between the housing 1 and the lens 2 can be achieved, which facilitates the disassembly, assembly and maintenance of the lens 2 .

[0043] Furthermore, an air inlet 34 is provided in the middle of the base 3 and runs through the inner and outer sides thereof. The air inlet 34 is circular in shape, a cooling fan 35 is installed on the side wall of the air inlet 34 , and a space is left between two adjacent heat conducting rods 42 .

[0044] When the cooling fan 35 is working, the air outside the housing 1 is sucked into the housing 1 through the air inlet 34. Since the heat dissipation end of the LED lamp 31 faces the cooling fan 35 and there is a space between the LED lamp 31 and the cooling fan 35, the air entering the housing 1 can drive the heat at the heat dissipation end of the LED lamp 31 and the heat at the part of the lens 2 that is not in contact with the arc-shaped heat conductive sheet 43. Then the air carries the heat out of the housing 1 from the square opening 13.

[0045] Reference Figure 6 Preferably, a space is left between the heat dissipation end of the semiconductor refrigeration plate 41 and the inner wall of the outer shell 1, and an L-shaped plate 411 is fixed to the four end faces of the semiconductor refrigeration plate 41. The end of the L-shaped plate 411 away from the semiconductor refrigeration plate 41 is in contact with the inner wall of the outer shell 1, and the L-shaped plate 411 and the outer shell 1 are detachably fixedly connected by screws 412.

[0046] Since there is space between the heat dissipation end of the semiconductor refrigeration chip 41 and the inner wall of the outer shell 1, the heat at the heat dissipation end of the semiconductor refrigeration chip 41 is not easily accumulated and blocked by the inner wall of the outer shell 1, and the four L-shaped plates 411 can also separate the heat dissipation end of the semiconductor refrigeration chip 41 from the inside of the outer shell 1, so that the heat at the heat dissipation end of the semiconductor refrigeration chip 41 is not easily diffused back into the outer shell 1, and the L-shaped plates 411 and the outer shell 1 are detachably connected by screws 412, which is convenient for disassembly, assembly and maintenance of the semiconductor refrigeration chip 41.

[0047] Reference Figure 5 Furthermore, an annular guide portion 15 is fixed on the outer wall of the shell 1 and close to the large installation opening 11. The side of the annular guide portion 15 close to the base 3 is recessed along a position away from the base 3, so that the cross-section of the annular guide portion 15 is arc-shaped.

[0048] After the air in the shell 1 is discharged from the square opening 13, this part of the air will first touch the annular guide part 15, and under the guidance of the annular guide part 15, this part of the hot air can be guided to the position where the heat dissipating fins 44 protrude from the shell 1, and the heat emitted from the heat dissipating fins 44 can be blown away together. It should be noted that due to the large temperature difference between the hot and cold ends of the semiconductor refrigeration plate 41, the hot air around the heat dissipating fins 44 can be blown away by the air blown out from the square opening 13, so that the temperature of the heat dissipating end of the semiconductor refrigeration plate 41 can be reduced as much as possible, and the temperature of the cooling end of the semiconductor refrigeration plate 41 will also drop accordingly, so as to improve the overall heat dissipation effect of the present application.

[0049] Reference Figure 2 and Figure 7 Preferably, two L-shaped plugs 16 are fixed to one end of the housing 1 close to the base 3, and the two L-shaped plugs 16 are symmetrically arranged. A slot 36 for plugging and matching with the L-shaped plug 16 is provided at one end of the base 3 close to the housing 1, and the two slots 36 are symmetrically arranged. The base 3 is provided with an L-shaped slide 37 connected to the slot 36, and the two L-shaped slides 37 are also symmetrically arranged. The L-shaped slider is plugged and matched with the L-shaped slide 37, and the L-shaped slide 37 extends circumferentially along the vertical center line of the base 3. The L-shaped plug 16 is divided into a vertical section connected to the end of the housing 1 and a horizontal section connected to the vertical section. The horizontal section of the L-shaped plug 16 is provided with a guide inclined surface 161 for matching with the side wall of the L-shaped slide 37.

[0050] Since the L-shaped plug block 16 can be plugged into the slot 36, and the L-shaped slider can also be plugged into the L-shaped groove 37, when the base 3 and the shell 1 are installed, the L-shaped plug block 16 is aligned with the slot 36 and inserted, and then the base 3 and the shell 1 are rotated relative to each other to make the L-shaped plug block 16 slide into the L-shaped groove 37. The setting of the guiding slope 161 can more smoothly guide the L-shaped plug block 16 into the L-shaped groove 37. Since the thickness of the horizontal section of the L-shaped slider is slightly larger than the thickness of the horizontal section of the L-shaped groove 37, the L-shaped plug block 16 can be interference fit with the L-shaped groove 37 to achieve circumferential fixation between the base 3 and the shell 1.

[0051] The implementation principle of an optical lens and its lighting spotlight in the embodiment of the present application is as follows: the LED lamp 31 is directly opposite to the incident surface, and the incident light emitted by the LED lamp 31 enters the interior of the lens 2 through the incident surface, and then is reflected to the exit surface by the total reflection surface 23, and then is refracted by the exit surface and emitted; the heat inside the lens 2 can be conducted to the heat-conducting rod 42 through the arc-shaped heat-conducting sheet 43 in contact with it, and is transferred to the cooling end of the semiconductor cooling sheet 41 along the heat-conducting rod 42, and the cooling end of the semiconductor cooling sheet 41 can absorb heat when working, so that the temperature of the cooling end is reduced, and the heat is transferred to its heat dissipation end, so that the heat dissipation As the temperature of the hot end increases, the heat at the heat dissipation end of the semiconductor refrigeration sheet 41 can be transferred to the outside of the housing 1 through the heat dissipation fins 44; when the heat dissipation fan 35 is working, the air outside the housing 1 is sucked into the inside of the housing 1 through the air inlet 34. Since the heat dissipation end of the LED lamp 31 faces the heat dissipation fan 35 and there is space between the LED lamp 31 and the heat dissipation fan 35, the air entering the inside of the housing 1 can drive the heat at the heat dissipation end of the LED lamp 31, and can also drive the heat at the part of the lens 2 that is not in contact with the arc-shaped heat conductive sheet 43. Then the air carries the heat out of the housing 1 from the square opening 13.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An optical lens, characterized in that: include: The housing (1) has a large installation opening (11) and a small installation opening (12) at two ends thereof; A lens (2) is arranged in the housing (1) and blocks the large installation opening (11), and an annular space is left between the inner wall of the housing (1) and the outer wall of the lens (2); The heat dissipation structure (4) is arranged in the annular space between the inner wall of the outer shell (1) and the outer wall of the lens (2), the cooling end of the heat dissipation structure (4) is in contact with the outer wall of the lens (2), the cooling end of the heat dissipation structure (4) penetrates the outer shell (1) and extends outward, and the heat inside the lens (2) is transferred to the cooling end through the cooling end of the heat dissipation structure (4) in contact with the cooling end, and discharged to the outside of the outer shell (1).

2. The optical lens according to claim 1, characterized in that: An incident groove (21) is provided at one end of the lens (2) close to the LED lamp (31); the groove bottom of the incident groove (21) is a first incident surface (211); the inner side wall of the incident groove (21) is a second incident surface (212); an exit groove (22) is provided at one end of the lens (2) away from the incident groove (21); the middle position in the exit groove (22) is set as a first exit surface (221); the outer peripheral position in the exit groove (22) is set as a second exit surface (222); and the arc-shaped outer side wall of the lens (2) is a total reflection surface (23).

3. The optical lens according to claim 2, characterized in that: The diameter of the incident groove (21) is 16.85 to 17.15 mm, the distance between the two opposite end faces of the lens (2) is 20.8 to 21.2 mm, the diameter of the largest part of the lens (2) is 44.8 to 45.2 mm, and the distance between the center of the incident groove (21) and the end face of the lens (2) close to the LED lamp (31) is 7.6 to 7.8 mm.

4. The optical lens according to claim 1, characterized in that: The heat dissipation structure (4) comprises a plurality of semiconductor cooling fins (41) arranged on the inner side wall of the outer shell (1) and arranged in an arc shape, a heat conducting rod (42) arranged at the cooling end of the semiconductor cooling fin (41), an arc-shaped heat conducting fin (43) arranged at the end of the heat conducting rod (42) away from the semiconductor cooling fin (41), and a heat dissipation fin (44) arranged at the heat dissipation end of the semiconductor cooling fin (41), wherein the plurality of semiconductor cooling fins (41) are arranged circumferentially along the inner side wall of the outer shell (1), one side of the arc-shaped heat conducting fin (43) is in contact with the outer side wall of the lens (2), and the heat dissipation fin (44) passes through the outer shell (1) and extends to the outside of the outer shell (1).

5. The optical lens according to claim 4, characterized in that: An L-shaped plate (411) is provided on the end surface of the semiconductor refrigeration plate (41), the L-shaped plate (411) is fitted with the inner wall of the outer shell (1), and a plurality of screws (412) are provided between the L-shaped plate (411) and the outer shell (1).

6. A lighting spotlight, comprising an optical lens according to any one of claims 1 to 5, characterized in that: The invention also comprises a base (3) arranged at the small installation opening (12) of the housing (1), the base (3) being provided with an LED lamp (31) for illuminating the lens (2), a plurality of L-shaped plug blocks (16) being provided at one end of the housing (1) close to the base (3), a slot (36) being provided at one end of the housing (1) close to the housing (1) for plugging and cooperating with the L-shaped plug block (16), an L-shaped slide groove (37) being provided at the base (3) for communicating with the slot (36), the L-shaped slider being plugged and cooperating with the L-shaped slide groove (37), the L-shaped slide groove (37) extending circumferentially along the vertical center line of the base (3), and a guide inclined surface (161) being provided at a horizontal section of the L-shaped plug block (16) for cooperating with a side wall of the L-shaped slide groove (37).

7. The lighting spotlight according to claim 6, characterized in that: A plurality of square openings (13) are provided at the large installation opening (11) of the housing (1), the square openings (13) passing through the end of the housing (1), a plurality of buckles (14) for sealing the openings of the square openings (13) are provided at the end of the housing (1) away from the base (3), and a card slot (24) for engaging with the buckle (14) is provided on the outer side of the lens (2).

8. The lighting spotlight according to claim 6, characterized in that: An air inlet (34) is provided in the middle of the base (3) and runs through both sides thereof. A heat dissipation fan (35) is provided on the side wall of the air inlet (34). A space is left between two adjacent heat-conducting rods (42). When the heat dissipation fan (35) is in operation, air outside the housing (1) is sucked into the interior of the housing (1) through the air inlet (34) and discharged along the square opening (13).

9. The lighting spotlight according to claim 7, characterized in that: An annular guide portion (15) is provided on the outer wall of the housing (1) near the large installation opening (11); the cross section of the annular guide portion (15) is arc-shaped, and the annular guide portion (15) guides air discharged from the square opening (13) to the position where the heat dissipation fins (44) protrude from the housing (1).

10. The lighting spotlight according to claim 7, characterized in that: A plurality of connecting strips (32) are arranged on the inner side of the base (3); a common mounting frame (33) is arranged at one end of the plurality of connecting strips (32) away from the base (3); the LED lamp (31) is arranged in the mounting frame (33); a heat dissipation end of the LED lamp (31) faces a heat dissipation fan (35); and a space is left between the LED lamp (31) and the heat dissipation fan (35).

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