Lighting device with adjustable beam angle

Abstract

The lighting device comprises a lamp shell, a light source PCB and a lens, a plurality of through holes are formed in the edge of the lamp shell, buckle assemblies are arranged on the surfaces, close to the sides of the through holes, of the lamp shell, and the working ends of the buckle assemblies are connected with the edge of the lens in a clamping mode. Light sources connected with the light source PCB form a plurality of light source sets in the circumferential direction of the surface of the light source PCB, the light source sets are spirally distributed along the center of the lens, and a plurality of protruding strip sets are arranged on the surface, away from the side of the light source PCB, of the lens in the circumferential direction. The convex strip group is composed of a plurality of convex strips with different optical surface shapes at the light incident side and / or the light emergent side, the convex strips are spirally distributed along the center of the lens, and beam angles formed when any two convex strips in the same light source group are irradiated by the light source group are different; the light beam angle can be adjusted by rotating the lens, and the lens and the lamp shell are connected without screws.

Description

Technical Field

[0001] The utility model relates to the field of lighting devices, and particularly to a lighting device with adjustable beam angle. Background Art

[0002] ‌The beam angle is an important parameter describing the light-emitting characteristics of a lighting device. It refers to the scattering range of the light beam emitted by the lighting device in space, and its direction can be an angle in the horizontal or vertical direction. The size of the beam angle directly affects the lighting effect. Selecting an appropriate beam angle can ensure the required lighting effect to meet the lighting needs of specific scenarios.

[0003] However, the lenses on existing lighting devices that determine the size of the beam angle are basically designed in a form with a specified and non-adjustable angle during production, resulting in a single beam angle. If it is necessary to adjust the beam angle of the lighting device, generally, the method of replacing the lens is adopted; moreover, most of the lenses on traditional lighting devices are fixed with screws, and this connection method of the lens will cause inconvenience in disassembly and assembly, bringing certain inconvenience to the assembly and maintenance operations of the lighting device; the lens structure of existing lighting devices still has deficiencies in the ability to meet the usage requirements of different scenarios and the convenience of disassembly and assembly. Summary of the Utility Model

[0004] Aiming at the above technical deficiencies, the utility model provides a lighting device that can adjust the size of the beam angle by rotating the lens and has a screw-free connection between the lens and the lamp housing.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0006] The utility model discloses a lighting device with adjustable beam angle. The lighting device includes a lamp housing, a light source PCB, and a lens. The light source PCB is fixedly connected to the bottom end of the lamp housing. The lens is located outside the light source PCB. A plurality of through holes are provided on the edge of the lamp housing, and a snap component is provided on the surface of the lamp housing near the through hole side. The working end of the snap component is connected to the edge of the lens by snap connection, so that an active connection is formed between the lens and the lamp housing. The light sources connected to the light source PCB form a plurality of light source groups in the circumferential direction on the surface of the light source PCB. The light source groups are arranged in a spiral manner along the center of the lens. A plurality of convex strip groups are provided on the circumferential surface of the lens on the side away from the light source PCB. The convex strip group is composed of a plurality of convex strips with different optical surface shapes on the light incident side and / or the optical surface shape at the light exit. The convex strips are arranged in a spiral manner along the center of the lens. The angle sizes of the beam angles formed by any two convex strips in the same light source group when irradiated by the light source group are different.

[0007] Furthermore, for any two adjacent ribs within the same rib group and within the circumferential range of the lens, the angular difference between the beam angles formed when irradiated by the light source group is the same.

[0008] Furthermore, the intervals between all the ribs are of the same size. The beam angles formed by two adjacent ribs within the circumferential range of the lens and belonging to different rib groups are different. The number of ribs provided in different rib groups is the same. The beam angles formed by the ribs arranged in the same order in the clockwise or counterclockwise direction of the lens in each rib group are the same.

[0009] Furthermore, the edge of the lens is provided with a first identification block having the same number as the number of ribs in the rib group. The first identification block is located outside the end of the rib. The surface of the lamp housing outside the lens is provided with a second identification block having the same number as the number of the first identification blocks. Two adjacent first identification blocks form a central angle ∠1 on the lens, and two adjacent second identification blocks form a central angle ∠2 on the end face of the lamp housing. The angular sizes of the central angle ∠1 and the central angle ∠2 are the same.

[0010] Furthermore, the buckle assembly includes a pull rod and a clamping member. At least two fixing seats are provided on the surface of the lamp housing far from the lens side of the through hole. The fixing seat is provided with a mating groove. The two ends of the pull rod in the length direction are respectively fitted in the mating grooves outside the two sides of the through hole. The fixing seat is fixedly connected with a limiting plate located outside the mating groove. One end of the clamping member is provided with a mating hole. The clamping member is sleeved on the middle part of the pull rod through the mating hole. The other end of the clamping member is provided with a hook-shaped hooking portion. The end of the hooking portion is provided with a limiting portion having an arched cross section. The edge of the lens is provided with a ring of convex edges. The clamping member hooks the convex edges through the hooking portion and the limiting portion to realize the connection with the lens.

[0011] Furthermore, a sealing groove is provided on the edge of the axial end face of the lens far from the ribs. A ring-shaped sealing member is fitted in the sealing groove. The end face of the lamp housing outside the light source PCB is provided with a ring of convex rings. The sealing member is provided with a ring of grooves. The convex rings are fitted in the grooves.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The lens in the lighting device is provided with a plurality of convex strips with different optical surface shapes. By rotating the lens to different positions, the optical surface irradiated by the light source is changed, and then a light beam angle corresponding to an angle is formed to meet the lighting requirements in different scenarios. The buckle assembly connects the lens and the lamp housing in a snap-fit manner, which not only enables the lens and the lamp housing to be connected without a screw connection structure, facilitating people to rotate the lens to adjust the light beam angle, but also allows the lens to be disassembled and assembled without tools, achieving the effects of facilitating the assembly of the lighting device and the maintenance of the light source surface of the lighting device. Brief Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the lighting device Figure 1 。

[0015] Figure 2 is a schematic structural diagram of the lighting device Figure 2 。

[0016] Figure 3 is a schematic structural diagram of the light source group on the light source PCB.

[0017] Figure 4 is a schematic structural diagram of the lens Figure 1 。

[0018] Figure 5 is Figure 4 a partial enlarged schematic diagram of part A in

[0019] Figure 6 is a schematic structural diagram of the lens Figure 2 。

[0020] Figure 7 is a schematic diagram when the lens rotates to form light beam angles of different angular sizes Figure 1 。

[0021] Figure 8 is a schematic diagram when the lens rotates to form light beam angles of different angular sizes Figure 2 。

[0022] Figure 9 is a schematic diagram of the central angle ∠1 and the central angle ∠2.

[0023] Figure 10 is a schematic structural diagram of the buckle assembly Figure 1 。

[0024] Figure 11 is a schematic structural diagram of the buckle assembly Figure 2 。

[0025] Figure 12 is a schematic structural diagram when the seal is arranged in the fitting gap between the edge of the lens and the lamp housing.

[0026] In the figure, 1 is the lamp housing; 11 is the through hole; 12 is the second identification block; 13 is the convex ring; 2 is the light source PCB; 3 is the lens; 31 is the convex strip group; 311 is the convex strip; 32 is the first identification block; 33 is the convex edge; 34 is the sealing groove; 4 is the buckle assembly; 41 is the pull rod; 42 is the clamping member; 421 is the mating hole; 422 is the hook portion; 423 is the limiting portion; 43 is the fixed seat; 431 is the mating groove; 44 is the limiting plate; 5 is the light source group; 6 is the sealing member; 61 is the groove. Detailed implementation mode

[0027] The utility model discloses an illumination device with adjustable beam angle. As Figures 1 - 6 shown, the illumination device includes a lamp housing 1, a light source PCB 2 and a lens 3. The light source PCB 2 is fixedly connected to the bottom end of the lamp housing 1. The lens 3 is located outside the light source PCB 2. A plurality of through holes 11 are provided on the edge of the lamp housing 1. Buckle assemblies 4 are provided on the surfaces of the lamp housing 1 near the through holes 11. The working ends of the buckle assemblies 4 are connected to the edge of the lens 3 by clamping, so that an active connection is formed between the lens 3 and the lamp housing 1. The light sources connected to the light source PCB 2 form a plurality of light source groups 5 in the circumferential direction on the surface of the light source PCB 2. The light source groups 5 are arranged in a spiral distribution along the center of the lens 3. A plurality of convex strip groups 31 are circumferentially provided on the surface of the lens 3 away from the light source PCB 2. The convex strip groups 31 are composed of a plurality of convex strips 311 with different optical surface shapes on the light incident side and / or different optical surface shapes at the light exit. The convex strips 311 are arranged in a spiral distribution along the center of the lens 3. The angle sizes of the beam angles formed by any two convex strips 311 in the same light source group 5 when irradiated by the light source group 5 are all different.

[0028] When the illumination device is in use, if it is necessary to adjust the size of the beam angle, the lens 3 can be rotated without removing the lens 3 from the illumination device after releasing the fixation of the lens 3 by the buckle assembly 4. When the lens 3 rotates to different positions on the lamp housing 1, one convex strip 311 in all the convex strip groups 31 on the lens 3 will move to a position outside the light source group 5. At this time, the optical surface structure of the convex strip 311 outside the light source group 5 changes compared with the previous convex strip 311. Therefore, after the optical surface irradiated by the light source changes, the angle of the beam angle formed by the illumination device will also change. Thus, by the above operation of adjusting the beam angle of the illumination device, the lighting requirements in different scenarios can be met. In addition, the buckle assembly 4 connects the lens 3 and the lamp housing 1 by clamping, which not only enables the lens 3 and the lamp housing 1 to be free of screw connection structure to facilitate people to rotate the lens 3 to adjust the beam angle, but also can disassemble and assemble the lens 3 without tools, so as to achieve the effects of facilitating the assembly of the illumination device and facilitating the maintenance of the light source surface of the illumination device.

[0029] Specifically, asFigure 4 and Figure 5 As shown in combination, for any two ribs 311 that are within the same rib group 31 and adjacent to each other within the circumferential range of the lens 3, the angular difference between the beam angles formed when irradiated by the light source group 5 is the same.

[0030] If the lens 3 is designed with beam angles of 60°, 90°, and 120°, the ribs 311 irradiated by the light source group 5 before and after the rotation of the lens 3 are two ribs 311 that are within the circumferential range of the lens 3 and adjacent to each other within the same rib group 31, and the angular difference between the formed beam angles is the same. Thus, the beam angle of the lighting device is adjusted regularly, making the user's perception of the beam angle adjustment of the lighting device more obvious.

[0031] It is worth noting that, as Figures 4 - 8 shown in combination, the intervals between all the ribs 311 are of the same size. The beam angles formed by two ribs 311 that are adjacent to each other within the circumferential range of the lens 3 and belong to different rib groups 31 are different. The number of ribs 311 provided in different rib groups 31 is the same, and the beam angles formed by the ribs 311 with the same arrangement order in the clockwise or counterclockwise direction of the lens 3 in each rib group 31 are the same.

[0032] Among them, all the ribs 311 are arranged in an equidistant circular distribution within the circumferential range of the lens 3, achieving a good visual effect. And because two ribs 311 that are adjacent to each other within the circumferential range of the lens 3 and belong to different rib groups 31 are the ribs 311 at the front and rear ends of the two rib groups 31, plus the number of ribs 311 provided in different rib groups 31 is the same, and the ribs 311 with the same beam angle size in the rib group 31 are arranged in the same order in the clockwise or counterclockwise direction of the lens 3. Thus, when continuously rotating the lens 3 in one direction, through the change in the beam angle size, the user can clearly understand which rib 311 in the corresponding rib group 31 the current beam angle size is and the switching of the rib group 31 irradiated by the light source group 5, thereby forming a similar gear-like adjustment structure, which has a certain improvement effect on the perception obtained by the user when adjusting the beam angle size, making it easier for the user to master the law of the lighting device when adjusting the beam angle size.

[0033] It is worth further noting that, as Figure 8 and Figure 9As shown in combination, a first identification block 32 with the same number as the number of ribs 311 in the rib group 31 is provided at the edge of the lens 3. The first identification block 32 is located outside the end of the rib 311. On the surface of the lamp housing 1 outside the lens 3, a second identification block 12 with the same number as the number of the first identification blocks 32 is provided. Two adjacent first identification blocks 32 form a central angle ∠1 on the lens 3, and two adjacent second identification blocks 12 form a central angle ∠2 on the end face of the lamp housing 1. The angular sizes of the central angle ∠1 and the central angle ∠2 are the same.

[0034] Among them, based on the circumferential array design of the rib group 31 on the lens 3 and the characteristic that the number of ribs 311 in different rib groups 31 is the same, the provided first identification blocks 32 and second identification blocks 12 can enable users to understand the number of ribs 311 representing different beam angle sizes in the rib group 31. Moreover, by aligning different first identification blocks 32 with different second identification blocks 12 at different positions when rotating the lens 3, it represents the size of the beam angle of the current lighting device, so that users do not need to continuously rotate the lens 3 in one direction to adjust the beam angle size of the lighting device. Instead, the beam angle of the lighting device is adjusted by rotating the lens 3 bidirectionally in a small range manually, making the beam angle adjustment operation of the lighting device faster. And through the corresponding positional relationship between the first identification block 32 and the second identification block 12, users can more intuitively understand the size of the current beam angle.

[0035] Specifically, as Figure 10 and Figure 11 As shown in combination, the buckle assembly 4 includes a pull rod 41 and a clamping member 42. On the surface of the lamp housing 1 far from the lens 3 side of the through hole 11, at least two fixed seats 43 are provided. The fixed seat 43 is provided with a mating groove 431. The two ends of the pull rod 41 in the length direction are respectively fitted in the mating grooves 431 outside both sides of the through hole 11. The fixed seat 43 is fixedly connected with a limiting plate 44 located outside the mating groove 431. One end of the clamping member 42 is provided with a mating hole 421. The clamping member 42 is sleeved on the middle part of the pull rod 41 through the mating hole 421. The other end of the clamping member 42 is provided with a hook-shaped hanging part 422. The end of the hook-shaped hanging part 422 is provided with a limiting part 423 with an arched cross section. A circular convex edge 33 is provided at the edge of the lens 3. The clamping member 42 is connected to the lens 3 by hooking the convex edge 33 through the hook-shaped hanging part 422 and the limiting part 423.

[0036] Among them, the buckle assembly 4 provides assistance for the clamping member 42 to hook the convex edge 33 of the lens 3 through the hooking portion 422 and the limiting portion 423 after passing through the through hole 11 by the elastic deformation of the pull rod 41. When it is necessary to rotate the lens 3 to adjust the beam angle, it is necessary to release the connection between the clamping member 42 and the lens 3. The arched limiting portion 423 can facilitate the user to pull the end of the clamping member 42 away from the convex edge 33. After the connections between all the clamping members 42 and the lens 3 are released, the lens 3 can be rotated to adjust the beam angle of the lighting device.

[0037] Specifically, as Figure 12 shown, a sealing groove 34 is provided on the edge of the axial end face of the lens 3 on the side away from the rib 311. A ring-shaped sealing member 6 is fitted in the sealing groove 34. A convex ring 13 is provided on the end face of the lamp housing 1 outside the light source PCB 2. The sealing member 6 is provided with a groove 61, and the convex ring 13 is fitted in the groove 61.

[0038] Among them, the setting of the sealing member 6 can maintain the sealing effect on the fitting gap between the edge of the lens 3 and the lamp housing 1, preventing foreign objects from entering the position where the light source PCB 2 is located through the fitting gap between the edge of the lens 3 and the lamp housing 1 and causing damage to the light source part of the lighting device; moreover, the cooperation between the groove 61 on the sealing member 6 and the convex ring 13 enables the position of the sealing member 6 to be better maintained, and the sealing effect on the fitting gap between the edge of the lens 3 and the lamp housing 1 is more stable.

[0039] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lighting device with adjustable beam angle, comprising a lamp housing, a light source PCB and a lens, wherein the light source PCB is fixedly connected to the bottom end of the lamp housing, and the lens is located outside the light source PCB, characterized in that: The edge of the lamp housing is provided with a plurality of through holes, and the surface of the lamp housing close to the through holes is provided with a snap assembly, the working end of the snap assembly is connected to the edge of the lens by snapping, and a movable connection is formed between the lens and the lamp housing, the light source connected to the light source PCB forms a plurality of light source groups in the circumferential direction of the surface of the light source PCB, the light source groups are spirally distributed along the center of the lens, and a plurality of convex strip groups are circumferentially provided on the surface of the lens away from the light source PCB, the convex strip group consists of a plurality of convex strips with different optical surface shapes on the light incident side and / or the optical surface shapes at the light exit, the convex strips are spirally distributed along the center of the lens, and any two convex strips in the same light source group have different angles of beam angles formed when being irradiated by the light source group.

2. The lighting device according to claim 1, characterized in that: Any two convex strips in the same convex strip group and located in adjacent positions within the circumferential range of the lens have the same angle difference of the light beam angles formed when being illuminated by the light source group.

3. The lighting device according to claim 2, characterized in that: The intervals between all the ridges are the same, the beam angles formed by two ridges that are adjacent to each other within the circumferential range of the lens and belong to different ridge groups are different, the number of ridges arranged in different ridge groups is the same, and the beam angles formed by the ridges in the same arrangement order in the clockwise or counterclockwise direction of the lens in each ridge group are the same.

4. The lighting device according to claim 3, characterized in that: The edge of the lens is provided with first identification blocks whose number is the same as the number of convex strips in the convex strip group, and the first identification blocks are located on the outer side of the convex strip end. The surface of the lamp shell outside the lens is provided with second identification blocks whose number is the same as the number of the first identification blocks. Two adjacent first identification blocks form a central angle ∠1 on the lens, and two adjacent second identification blocks form a central angle ∠2 on the end face of the lamp shell, and the central angle ∠1 and the central angle ∠2 are the same in size.

5. The lighting device according to claim 1, characterized in that: The buckle assembly includes a pull rod and a clamping piece. At least two fixing seats are provided on the surface of the lamp housing outside the lens side of the through hole. The fixing seat is provided with a matching groove. The two ends of the pull rod in the length direction are respectively matched in the matching grooves outside the two sides of the through hole. The fixing seat is fixedly connected with a limiting plate located outside the matching groove. One end of the clamping piece is provided with a matching hole. The clamping piece is sleeved on the middle part of the pull rod through the matching hole. The other end of the clamping piece is provided with a hook-shaped hooking portion. The end of the hooking portion is provided with a limiting portion with an arched cross-section. The edge of the lens is provided with a circle of convex edges. The clamping piece hooks the convex edge through the hooking portion and the limiting portion to achieve connection with the lens.

6. The lighting device according to claim 1, characterized in that: The axial end face edge of the lens away from the convex strip is provided with a circle of sealing groove, and an annular sealing member is matched in the sealing groove. The end face of the lamp housing outside the light source PCB is provided with a circle of convex ring, and the sealing member is provided with a circle of groove, and the convex ring is matched in the groove.

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