A lighting device

Abstract

The present invention relates to a lighting device, which solves the problems of poor light efficiency utilization and small application range of existing LED lamps. The lighting device includes a lamp housing, a light cup ring, a positive beam angle lens, a light source substrate, an outer lens, a lens ring, a pressure cover, a power supply compartment and a power supply; a light emitting groove is arranged at the top of the lamp housing, and the light cup ring is a conical structure, which is arranged in the light emitting groove; the light source substrate is arranged at the bottom of the light emitting groove, and a plurality of LED lamp beads are arranged above it, and a plurality of positive beam angle lenses are arranged in the light cup ring, located above the light source substrate, and buckled on the LED lamp beads to distribute the light emitted by the LED lamp beads; the outer lens is arranged at the top of the positive beam angle lens, and is pressed by the lens ring and the pressure cover arranged at the upper end of the lamp housing; the power supply compartment is arranged at the bottom of the lamp housing, and the power supply is installed in the power supply compartment to provide electrical energy to the LED lamp beads.

Description

Technical Field

[0001] The invention relates to a lighting device. Background Art

[0002] LED (Light Emitting Diode) has become a competitive new light source in the 21st century with its advantages of high efficiency, pure light color, low energy consumption, long life and no pollution. With the continuous improvement of LED luminous flux and light efficiency, the application of LED in the field of lighting is becoming more and more extensive. However, the surface light of LED chip is Lambertian distribution and cannot be directly applied to lighting system. Therefore, the secondary light distribution design with LED as the light source is particularly important.

[0003] High-power LED lamps are generally composed of a front cover, a heat dissipation shell, a light source board and its power supply. The light source is generally composed of multiple LEDs arranged in an array, so the corresponding light distribution optical devices must also be designed in the form of multiple modules. However, the commonly used lenses on the market are reflective beam angle lenses. The smaller the angle, the larger the structural size and the larger the space occupied. When LED lamps need to irradiate at a small angle, a small-angle reflective beam angle lens must be installed. Due to the large size of a single reflective beam angle lens, the overall design size of the lamp cannot be reduced, and the market application scope is small.

[0004] At the same time, the existing lens projected light spot is circular, and the light intensity between the center and the periphery is quite different. For some occasions that require large-scale lighting in a certain direction and small-scale lighting in another direction, such as road lighting, a wide range of illumination, good lighting effect, and large angle are required in the direction of road extension. However, wide-range lighting is not required in the direction perpendicular to the road, otherwise, it will not only waste electricity but also cause light pollution to the surrounding environment. However, for the existing circular lens LED, the light intensity requirement can only be achieved by installing more lamps in the direction of road extension and superimposing the light spots of adjacent lamps. Even so, it is difficult to avoid the lighting effect of "rib road". The illumination is high directly below the lamp, and the illumination is low in other areas, resulting in low average illumination and poor uniformity on the road surface. This uneven lighting directly affects driving safety.

[0005] In addition, conventional LED lamps usually use lenses to perform secondary light distribution on the lighting light of the LED lamp beads. The light efficiency utilization rate of such LED lamps is relatively poor. The inner wall of the shell blocks and loses the light, and the light efficiency utilization rate of the LED lamp cannot be fully utilized. At the same time, the light emitting angle of the lamp has a large contrast and is difficult to adjust, and the application range of LED lamps is small. Summary of the invention

[0006] In order to solve the problems of poor light efficiency utilization and small application range of existing LED lamps, the present invention provides a lighting device.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0008] A lighting device, comprising a lamp housing, a light cup ring, a positive beam angle lens, a light source substrate, an outer lens, a lens ring, a pressure cover, a power supply compartment and a power supply; a light emitting groove is arranged at the top of the lamp housing, and the light cup ring is a conical structure and is arranged in the light emitting groove; the light source substrate is arranged at the bottom of the light emitting groove, and a plurality of LED lamp beads are arranged above it, and a plurality of positive beam angle lenses are arranged in the light cup ring, located above the light source substrate, and buckled on the LED lamp beads to distribute the light emitted by the LED lamp beads; the outer lens is arranged at the top of the positive beam angle lens, and is pressed by the lens ring and the pressure cover arranged at the upper end of the lamp housing; the power supply compartment is arranged at the bottom of the lamp housing, and the power supply is installed in the power supply compartment, and is used to provide power to the LED lamp beads The positive beam angle lens comprises a hemispherical convex lens and a cylindrical mirror body which is located directly below the hemispherical convex lens and is integrally arranged, and the diameters of the hemispherical convex lens and the cylindrical mirror body are equal; the hemispherical curved surface of the hemispherical convex lens serves as a light emitting surface; the center of the bottom of the cylindrical mirror body is recessed inward to form a light source accommodating chamber, and the inner wall of the light source accommodating chamber serves as a light incident surface, and the center line of the light incident surface is coaxial with the center line of the light emitting surface; the shape of the cavity inside the light source accommodating chamber is a triangular prism; and one of the rectangular faces of the triangular prism is located at the bottom of the cylindrical mirror body, and the inner corners of the edges in the cavity are all rounded; the plane where the bottom of the cylindrical mirror body is located is defined as the xy plane, so that the light distribution surface along the xy plane is in the shape of a bat wing, and the light distribution surface along the yz plane is in the shape of a water drop.

[0009] Furthermore, the distance between the center of the top of the light source accommodating chamber and the center of the light emitting surface is greater than the radius of the hemispherical convex lens; the Z-direction height of the light source accommodating chamber is equal to the radius of the hemispherical convex lens, and the X-direction dimension of the opening end of the light source accommodating chamber is greater than the radius of the hemispherical convex lens.

[0010] Furthermore, the Z-direction height is 18 mm, the radius of the hemispherical convex lens is 8 mm, the Z-direction height of the cylindrical mirror body is 11.3 mm, the Y-direction dimension of the opening end of the light source accommodating chamber is 8.3 mm, and the X-direction dimension is 9 mm.

[0011] Furthermore, it also includes an annular mounting member arranged at the bottom of the cylindrical mirror body, and a protrusion is arranged on the end surface of the annular mounting member.

[0012] Furthermore, heat dissipation fins are arranged on the outer side of the lamp housing.

[0013] Furthermore, it also includes a mounting bracket arranged on the lamp housing, the mounting bracket includes a reinforcement frame and a positioning head; the positioning head is installed on the lamp housing, and a locking protrusion is provided at one end of the positioning head; the reinforcement frame includes a mounting rod, a left support rod and a right support rod, one end of the left support rod is connected to one end of the mounting rod, and one end of the right support rod is connected to the other end of the mounting rod to form a U-shaped structure; the other ends of the left support rod and the right support rod are provided with a rotating plate hinged to the lamp housing, the end surface of the rotating plate is provided with a guide hole, a guide rod is provided in the guide hole, the guide rod is fixedly provided on the lamp housing, and a plurality of locking grooves are provided on the side of the rotating plate, and the locking grooves cooperate with the locking protrusions to realize the positioning of the reinforcement frame.

[0014] Furthermore, the guide hole is a semi-annular guide hole, the rotating plate is a circular plate, a plurality of locking grooves are provided on the side of the rotating plate and arranged circumferentially, and a rotation scale matching the locking grooves is provided on the rotating plate.

[0015] Furthermore, a first waist-shaped hole is provided on the positioning head for realizing the position adjustment of the positioning head on the lamp housing, the end faces of the left support rod and the right support rod are provided with stamping grooves, and the side faces are provided with supporting ribs, and reinforcing ribs are provided on both sides of the mounting rod, and the mounting rod is connected to the left support rod and the right support rod by an arc plate.

[0016] Furthermore, the power supply is arranged in the power supply compartment through a power supply fixing plate, and the power supply fixing plate includes a bottom plate and two side plates, and the bottom ends of the two side plates are fixedly arranged at both ends of the bottom plate to form a U-shaped structure; the side plates are provided with a heat dissipation window, a control window and a power supply mounting hole, and the power supply is installed in the power supply fixing plate and fixedly connected through the power supply mounting hole, and the control button of the power supply is located in the control window.

[0017] Furthermore, thermally conductive silica gel is provided on the contact surface between the power supply and the power supply fixing plate.

[0018] Furthermore, the bottom plate is provided with a plurality of linearly arranged fixing holes for mounting the power supply fixing plate on the lamp housing by means of screws.

[0019] Furthermore, a plurality of weight-reducing holes are arranged on the bottom plate, and the corners at the top ends of the side plates are arranged as arc-shaped corners.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The lamp of the present invention is provided with a conical light cup and a small-angle positive beam angle lens, and has the advantages of a wide lighting surface and a wide range of adaptability of light-emitting angles.

[0022] 2. A positive beam angle lens is arranged above the LED lamp bead of the lighting device of the present invention, and the positive beam angle lens distributes the light emitted by the LED lamp bead, so that the light efficiency utilization rate is high. In addition, the light-emitting surface and the light-incoming surface of the positive beam angle lens are both convex lenses, which reasonably utilize the refraction effect of light, so that the smaller the light-emitting angle, the smaller the lens structure, and thus the volume of the lighting device is smaller.

[0023] 3. The positive beam angle lens of the lighting device of the present invention has a small structure, simple production, low cost, flexible adjustment of the reflection angle, convenient installation / replacement, and a wide range of applications. It can meet the needs of LED lamps with various light-emitting angles, and is particularly suitable for high-power LED lamps with different light-emitting angles.

[0024] 4. The positive beam angle lens of the lighting device of the present invention has uniform light intensity distribution, and the distribution range in the horizontal direction and the vertical direction are different. In practical applications, the light efficiency utilization rate is high.

[0025] 5. The lamp mounting bracket provided by the present invention is provided with a plurality of locking grooves, which can correspond to corresponding angles, so that the lamp mounting bracket can be accurately adjusted in angle. The mounting bracket is provided with a locking protrusion, which cooperates with the locking groove to lock and position, so that the mounting bracket can be easily and reliably positioned and locked.

[0026] 6. The mounting bracket provided by the present invention has a simple structure and is easy to install, and can be applied to lamps of different powers and sizes. The mounting rod is connected to the left support rod and the right support rod by an arc plate, so that the strength of the connection is relatively large, and stress concentration at the connection is avoided. At the same time, a support rib plate is provided on one side of the left support rod and the right support rod, and a stamping groove is provided on the end surface of the left support rod and the right support rod. The support rib plate and the stamping groove increase the strength of the mounting bracket, so that the mounting bracket is applicable to lamps of larger weight.

[0027] 7. The power supply provided by the present invention is a detachable power supply with a simple structure, light weight, easy installation, and universality for power supply equipment of different models, specifications, and powers. The detachable power supply is modular, easy to replace, and low in cost. It is suitable for the installation of power supplies for lamps of different powers and has a wide range of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The structure of the lighting device of the present invention is Figure 1 (Outer lens omitted);

[0029] Figure 2 The structure of the lighting device of the present invention is Figure 2 ;

[0030] Figure 3 It is a schematic diagram of the installation of the outer lens of the present invention;

[0031] Figure 4 It is a structural diagram of the housing of the lamp of the present invention;

[0032] Figure 5 It is a structural diagram of the optical cup ring of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the positive beam angle lens of the present invention;

[0034] Figure 7 It is a structural cross-sectional view of the positive beam angle lens of the present invention along the yz plane;

[0035] Figure 8 It is a front view of the positive beam angle lens of the present invention;

[0036] Fig. 9 A bottom view of the positive beam angle lens of the present invention;

[0037] Fig.10 is the light intensity distribution curve of the positive beam angle lens of the present invention;

[0038] Fig.11 This is a schematic diagram of the structure of the lamp mounting bracket of the present invention;

[0039] Fig.12 This is a structural diagram of the middle reinforcement frame of the lamp mounting bracket of the present invention;

[0040] Fig.13 It is a structural diagram of the center positioning head of the lamp mounting bracket of the present invention.

[0041] Fig.14 It is a structural schematic diagram of the detachable power supply of the present invention;

[0042] Fig.15 It is a structural schematic diagram of the power supply fixing plate of the present invention.

[0043] Figure numerals: 1-light cup ring, 2-lamp housing, 3-positive beam angle lens, 4-light source substrate, 5-outer lens, 6-lens ring, 7-pressure cover, 8-mounting bracket, 9-power supply, 10-power supply compartment, 11-heat dissipation fins, 21-light emitting groove, 31-hemispherical convex lens, 32-cylindrical mirror body, 33-light source accommodating chamber, 34-ring mounting piece, 35-protrusion; 81-reinforcement frame, 82-positioning head, 811-mounting rod, 812-left support rod, 813-right support rod, 814-rotating plate, 815-guide rod, 816-stamping groove, 817-support rib plate, 818-arc plate, 819-reinforcement rib plate, 8141-guide hole, 8142-locking groove, 8143-rotation scale, 8111-second waist-shaped hole, 8112-third waist-shaped hole, 821-locking protrusion, 822-first waist-shaped hole, 91-power supply fixing plate, 93-bottom plate, 94-side plate, 931-fixed mounting hole, 932-weight reduction hole, 941-heat dissipation window, 942-control window, 943-power supply mounting hole. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0045] like Figures 1 to 5 As shown, the lighting device provided by the present invention includes a lamp housing 2, a light cup ring 1, a positive beam angle lens 3, a light source substrate 4, an outer lens 5, a lens ring 6, a pressure cover 7, a power supply compartment 10 and a power supply 9. A light emitting groove 21 is arranged at the top of the lamp housing 2, and the light cup ring 1 is a conical structure and is arranged in the light emitting groove 21; the light source substrate 4 is arranged at the bottom of the light emitting groove 21, and a plurality of LED lamp beads are arranged above it, and a plurality of positive beam angle lenses 3 are arranged in the light cup ring 1, located above the light source substrate 4, and buckled on the LED lamp beads to distribute the light emitted by the LED lamp beads; the outer lens 5 is arranged at the top of the positive beam angle lens 3, and is pressed by the lens ring 6 and the pressure cover 7 arranged at the upper end of the lamp housing 2; the power supply compartment 10 is arranged at the bottom of the lamp housing 2, and the power supply 9 is installed in the power supply compartment 10 to provide electric energy to the LED lamp beads; the outer side of the lamp housing 2 is provided with heat dissipation fins 11.

[0046] like Figure 5As shown, the light cup ring 1 is a conical structure, which adopts an integrated molding structure, has the characteristics of light weight, easy processing, low cost, stable structure, good strength, easy installation, etc., and has a strong secondary light distribution effect on the lighting light of the LED lamp beads, flexible reflection angle, good light efficiency utilization rate, and a wide range of applications. Conventional LED lamps rarely install this component, and usually use lenses to perform secondary light distribution on the lighting light of the LED lamp beads. The light efficiency utilization rate of such LED lamps is relatively poor, and the inner wall of the shell blocks and loses the light, which cannot fully exert the light efficiency utilization rate of the LED lamp. At the same time, the contrast of the lamp's luminous angle is large and difficult to adjust, and the application range of LED lamps is small.

[0047] like Figures 6 to 10 As shown, the material of the positive beam angle lens 3 of this embodiment is PC, including a hemispherical convex lens 31 and a cylindrical mirror body 32 located directly below the hemispherical convex lens 31 and integrally arranged. The diameters of the hemispherical convex lens 31 and the cylindrical mirror body 32 are equal; wherein the hemispherical curved surface of the hemispherical convex lens 31 serves as the light-emitting surface of the lens; the center of the bottom of the cylindrical mirror body 32 is concave inward to form a light source accommodating chamber 33, and the inner wall of the light source accommodating chamber 33 serves as the light-entering surface, and the center line of the light-entering surface is coaxial with the center line of the light-emitting surface. Define the plane where the bottom of the cylindrical mirror body 32 is located as the xy plane, combined with Figure 7 , Figure 8 and Fig. 9 In this embodiment, the shape of the cavity inside the light source accommodating cavity is a triangular prism; and one of the rectangular faces of the triangular prism is located at the bottom of the cylindrical mirror body 32, and the inner corners of the edges in the cavity are all rounded.

[0048] In order to fix the positive beam angle lens 3 outside the LDE lamp bead, the positive beam angle lens 3 also includes an annular mounting member 34 arranged at the bottom of the cylindrical lens body 32, and a protrusion 35 is arranged on the end surface of the annular mounting member 34, and the installation and fixation are achieved through the protrusion 35. Specifically, after the LDE lamp beads are evenly distributed on the fixing plate, the positive beam angle lens 3 of this embodiment is buckled on the LDE lamp beads to form an LDE lamp. Fig.10 The positive beam angle lens of this embodiment has a bat-wing shape in the xy plane direction, i.e., the horizontal direction, and a water drop shape in the yz direction, i.e., the vertical direction. If it is applied to street lamps, it can solve the problem of rib roads and ensure driving safety. It can also be applied to ships. When it is determined that there is a foreign object ahead of the vehicle, the positive beam angle lens 3 can be used to check the surrounding environment of the foreign object.

[0049] from Fig.10It can be seen that the light intensity distribution curve of the positive beam angle lens 3 of this embodiment has an irradiation range of 10° in the yz direction and an irradiation range of 50° in the xy plane direction. The specific structural parameters of the positive beam angle lens 3 of this embodiment are as follows: the Z-direction height of the positive beam angle lens 3 is 18mm; the radius of the hemispherical convex lens 31 is 8mm, the Z-direction height of the cylindrical mirror body 32 is 11.3mm, the Y-direction dimension of the opening end of the light source accommodating chamber 33 is 8.3mm, the X-direction dimension is 9mm, the top angle of the triangular prism is 40°, the Z-direction thickness of the annular mounting member 34 is 1mm, and the Z-direction thickness of the protrusion 35 is 0.6mm.

[0050] like Figures 11 to 13 As shown, the precisely adjustable mounting bracket 8 provided by the present invention comprises a reinforcing frame 81 and a positioning head 82; the positioning head 82 is mounted on the lamp housing 2, and one end of the positioning head 82 is provided with a locking protrusion 821. At the same time, the positioning head 82 is provided with a first waist-shaped hole 822 for realizing the adjustable position of the positioning head 82 on the lamp housing 2. The reinforcement frame 81 includes a mounting rod 811, a left support rod 812 and a right support rod 813, one end of the left support rod 812 is connected to one end of the mounting rod 811, and one end of the right support rod 813 is connected to the other end of the mounting rod 811 to form a U-shaped structure; the other ends of the left support rod 812 and the right support rod 813 are provided with a rotating plate 814 hinged to the lamp housing 2, the end surface of the rotating plate 814 is provided with a guide hole 8141, and a guide rod 815 is provided in the guide hole 8141, and the guide rod 815 is fixedly set on the lamp housing 2, and a plurality of locking grooves 8142 are provided on the side of the rotating plate 814, and the locking grooves 8142 cooperate with the locking protrusions 821 to realize the positioning of the reinforcement frame 81.

[0051] The guide hole 8141 can be a semi-circular guide hole, the rotating plate 814 is a circular plate, and a plurality of locking grooves 8142 are provided on the side of the rotating plate 814 and arranged circumferentially. The number of locking grooves 8142 is 36, and the circumferential angle of each groove is 5 degrees. At the same time, a rotation scale 8143 matching the locking groove 8142 is provided on the rotating plate 814. The mounting rod 811 is connected to the left support rod 812 and the right support rod 813 by an arc plate 818 to achieve a smooth transition connection. The setting of the arc plate 818 makes the strength of the connection greater and avoids stress concentration at the connection. The end faces of the left support rod 812 and the right support rod 813 are provided with a stamping groove 816, and one side of the left support rod 812 and the right support rod 813 is provided with a supporting rib plate 817. Both sides of the mounting rod 811 are provided with reinforcing rib plates 819. The stamping groove 816, the supporting rib plate 817 and the reinforcing rib plate 819 all increase the strength of the mounting bracket 8, making its structure stable and suitable for lamps with a larger weight. The end face of the mounting rod 811 is provided with a second waist-shaped hole 8111 and a third waist-shaped hole 8112, which are vertically arranged. The second waist-shaped hole 8111 and the third waist-shaped hole 8112 can adjust the position of the mounting bracket 8 during installation, making it more convenient to install and having a wider range of uses.

[0052] The precisely adjustable mounting bracket 8 provided by the present invention is made of 4mm stainless steel, a U-shaped folding structure, ribs on the load-bearing arms at both ends, and a large rounded bend at the bottom. The use of 4mm stainless steel plate has the characteristics of easy processing, light weight, and low cost. The U-shaped folding structure, the stamping grooves of the load-bearing arms at both ends, and the large rounded bend structure at the bottom increase the load-bearing capacity of the mounting bracket 8, thereby increasing its force strength, and at the same time making the appearance of the mounting bracket 8 exquisite. The rotating plate 814 adopts a gear-type rotating structure, with a wide range of rotation angles (0-180°), precise rotation angles (0-5° for one grid rotation), a wide installation range, and the bottom of the bracket installation can rotate by ±20°, which can achieve precise angle adjustment. In addition, the mounting bracket 8 has few fixed parts and is easy to install. The positioning head 82 is made of 5mm stainless steel and adopts a gear-type locking structure. The positioning head 82 has the advantages of small size, easy processing, few parts, convenient installation, simple operation, and stable locking of the LED lamp and the fixing frame.

[0053] like Figure 14 to Figure 15As shown, the power supply 9 of the present invention is arranged in the power supply compartment 10 through the power supply fixing plate 91; the power supply fixing plate 91 includes a bottom plate 93 and two side plates 94, the bottom ends of the two side plates 94 are fixedly arranged at the two ends of the bottom plate 93, forming a U-shaped structure; the side plates 94 are provided with a heat dissipation window 941, a control window 942 and a power supply mounting hole 943, the power supply 9 is installed in the power supply fixing plate 91, fixedly connected through the power supply mounting hole 943, and the control button of the power supply 9 is located in the control window 942, the heat dissipation window 941 and the control window 942 can be rectangular windows, or windows of other shapes. The bottom plate 93 is provided with a fixed mounting hole 931, which is used to mount the power supply fixing plate 91 on the lamp housing 2 by screws, and the fixed mounting holes 931 are multiple and linearly arranged. This arrangement makes the installation of the power supply fixing plate 91 simple, and the power supply fixing plate 91 can be installed in the lamp housing 2 according to needs. Specifically, four groups of power supply mounting holes 943 are provided on the side plate 94, two of which are provided at the upper end of the side plate 94 and located on both sides of the side plate 94, and the other two are provided at the lower end of the side plate 94 and located on both sides of the side plate 94, each group of power supply mounting holes 943 is multiple, and the multiple power supply mounting holes 943 are arranged linearly. This arrangement allows power supplies 9 of different models and sizes to be installed on the power supply fixing plate 91, thereby achieving the versatility of the power supply fixing plate 91.

[0054] The contact surface between the power supply 9 and the power supply fixing plate 91 is provided with thermal conductive silica gel, which can quickly transfer the heat of the power supply 9 to the power supply fixing plate 91, thereby avoiding the high temperature of the power supply 9 and reducing its service life. A plurality of weight-reducing holes 932 are provided on the bottom plate 93, which can reduce the weight of the power supply fixing plate 91, thereby making the overall weight of the lamp smaller. The corners at the top of the side plate 94 are set as arc-shaped corners to avoid scratches on the installer caused by sharp corners during installation. The present invention adopts a U-shaped power supply 9 mounting frame, and two power supplies 9 of different models, specifications and powers can be fixed on both sides of the U-shaped mounting frame at the same time. The assembled components are then used as a module and are installed as a whole into the lamp power supply 9 box, and then fixed with screws at both ends of the bottom of the mounting frame.

Claims

1. A lighting device, Features: It comprises a lamp housing (2), a light cup ring (1), a positive beam angle lens (3), a light source substrate (4), an outer lens (5), a lens ring (6), a pressure cover (7), a power supply compartment (10) and a power supply (9); The top of the lamp housing (2) is provided with a light emitting groove (21); the light cup ring (1) is a conical structure and is arranged in the light emitting groove (21); the light source substrate (4) is arranged at the bottom of the light emitting groove (21), and a plurality of LED lamp beads are arranged above the light source substrate (4); a plurality of positive beam angle lenses (3) are arranged in the light cup ring (1), located above the light source substrate (4), and buckled on the LED lamp beads to distribute the light emitted by the LED lamp beads; the outer lens (5) is arranged at the top of the positive beam angle lens (3), and is pressed by the lens ring (6) and the pressure cover (7) arranged at the upper end of the lamp housing (2); the power supply compartment (10) is arranged at the bottom of the lamp housing (2), and the power supply (9) is installed in the power supply compartment (10) to provide electric energy to the LED lamp beads; The positive beam angle lens (3) comprises a hemispherical convex lens (31) and a cylindrical mirror body (32) located directly below the hemispherical convex lens (31) and integrally arranged, the diameters of the hemispherical convex lens (31) and the cylindrical mirror body (32) being equal; the hemispherical curved surface of the hemispherical convex lens (31) serves as a light emitting surface; the center of the bottom of the cylindrical mirror body (32) is recessed inward to form a light source accommodating chamber (33); the inner wall of the light source accommodating chamber (33) serves as a light incident surface, and the center line of the light incident surface is coaxial with the center line of the light emitting surface; The shape of the internal cavity of the light source accommodating chamber (33) is a triangular prism, and one of the rectangular faces of the triangular prism is located at the bottom of the cylindrical mirror body (32), and the inner corners of the edges in the cavity are all rounded; the plane where the bottom of the cylindrical mirror body (32) is located is defined as the xy plane, so that the light distribution surface along the xy plane is in the shape of a bat wing, and the light distribution surface along the yz plane is in the shape of a water drop; The distance between the top center of the light source accommodating chamber (33) and the center of the light emitting surface is greater than the radius of the hemispherical convex lens (31); the Z-direction height of the light source accommodating chamber (33) is equal to the radius of the hemispherical convex lens (31); and the X-direction dimension of the opening end of the light source accommodating chamber (33) is greater than the radius of the hemispherical convex lens (31); The positive beam angle lens (3) further comprises an annular mounting member (34) arranged at the bottom of the cylindrical lens body (32), and a protrusion (35) is arranged on the end surface of the annular mounting member (34); Heat dissipation fins (11) are arranged on the outside of the lamp housing (2).

2. The lighting device according to claim 1, Features: The lamp also includes a mounting bracket (8) arranged on the lamp housing (2), wherein the mounting bracket (8) includes a reinforcement frame (81) and a positioning head (82); the positioning head (82) is mounted on the lamp housing (2), and a locking protrusion (821) is arranged at one end thereof; the reinforcement frame (81) includes a mounting rod (811), a left support rod (812) and a right support rod (813); one end of the left support rod (812) is connected to one end of the mounting rod (811), and one end of the right support rod (813) is connected to the other end of the mounting rod (811), forming a U-shaped structure. The other end of the left support rod (812) and the right support rod (813) is provided with a rotating plate (814) hinged to the lamp housing (2), the end face of the rotating plate (814) is provided with a guide hole (8141), a guide rod (815) is provided in the guide hole (8141), and the guide rod (815) is fixedly arranged on the lamp housing (2), and the side of the rotating plate (814) is provided with a plurality of locking grooves (8142), and the locking grooves (8142) cooperate with the locking protrusions (821) to realize the positioning of the reinforcement frame (81).

3. The lighting device according to claim 2, Features: The guide hole (8141) is a semi-annular guide hole, the rotating plate (814) is a circular plate, a plurality of locking grooves (8142) are provided on the side of the rotating plate (814) and arranged in a circumferential direction, and a rotating scale (8143) adapted to the locking grooves (8142) is provided on the rotating plate (814).

4. The lighting device according to claim 3, Features: The positioning head (82) is provided with a first waist-shaped hole (822) for realizing position adjustment of the positioning head (82) on the lamp housing (2); the end faces of the left support rod (812) and the right support rod (813) are provided with stamping grooves (816); the side faces are provided with support ribs (817); the two sides of the mounting rod (811) are provided with reinforcing ribs (819); and the mounting rod (811) is connected to the left support rod (812) and the right support rod (813) by using an arc plate (818).

5. The lighting device according to claim 4, Features: The power supply (9) is arranged in the power supply compartment (10) via a power supply fixing plate (91); the power supply fixing plate (91) comprises a bottom plate (93) and two side plates (94); the bottom ends of the two side plates (94) are fixedly arranged at the two ends of the bottom plate (93) to form a U-shaped structure; the side plates (94) are provided with a heat dissipation window (941), a control window (942) and a power supply mounting hole (943); the power supply (9) is installed in the power supply fixing plate (91) and is fixedly connected via the power supply mounting hole (943); and the control button of the power supply (9) is located in the control window (942).

6. The lighting device according to claim 5, Features: The contact surfaces of the power supply (9) and the power supply fixing plate (91) are provided with heat-conducting silica gel; the bottom plate (93) is provided with a plurality of linearly arranged fixing installation holes (931) for fixing the power supply fixing plate (91) on the lamp housing (2) by means of screws; the bottom plate (93) is provided with a plurality of weight-reducing holes (932), and the corners at the top ends of the side plates (94) are arranged as arc-shaped corners.

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