LED eye protection table lamp capable of monitoring camera shooting

Abstract

The utility model relates to the technical field of table lamps, and discloses an LED eye protection table lamp capable of monitoring camera shooting, the LED eye protection table lamp is mainly composed of a supporting mechanism, the supporting mechanism is composed of a supporting assembly, a camera shooting assembly and a limiting assembly, the supporting assembly is vertically placed at the top end of a fixing mechanism, and the camera shooting assembly movably sleeves the supporting assembly; and a limiting assembly is movably arranged outside the supporting assembly below the camera shooting assembly. The supporting mechanism is arranged at the top end of the base, meanwhile, the rotating groove is formed in the bottom end of the rotating plate, the height of the supporting assembly is changed through the limiting assembly, the vertical stability of the supporting assembly is kept, and therefore the supporting assembly can be always connected with the rotating groove in a clamped mode after the angle of the rotating plate is adjusted; the overall stability of the lighting mechanism is effectively improved, even if the rotating shaft and the rotating plate are loosened after long-term use, the rotating plate keeps the stability after angle adjustment all the time, and therefore the use convenience and comfort of a user are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of desk lamps, and in particular to an LED eye-protection desk lamp capable of monitoring and video recording. Background Art

[0002] A desk lamp is an electric lamp with a base placed on a desktop. The main function of a desk lamp is lighting, which is convenient for study and work. With the advancement of science and technology, people's requirements for desk lamps are constantly increasing. Not only do they require desk lamps to provide lighting, but they also require desk lamps to have eye protection when lighting, to ensure a good visual environment in the desktop area, and to have monitoring and video functions, which can achieve remote monitoring, voice intercom and other effects. Therefore, LED eye protection desk lamps with monitoring and video came into being. At present, the desk lamp is mainly composed of a base, an LED lighting mechanism, a bracket and a camera. The bracket is fixedly installed on the base, and the bracket and the LED lighting mechanism are movably connected by a rotating shaft. Users can change the irradiation angle of the LED lighting mechanism according to their own habits and other conditions to improve the user's comfort, thereby improving learning efficiency and work efficiency.

[0003] However, the existing table lamps still have some defects during use: since the lighting mechanism and the bracket are movably hinged by a rotating shaft, after the table lamp is used for a long time, the rotating shaft and the lighting mechanism are easy to loosen, and the state of the lighting mechanism cannot be fixed after the angle is adjusted, which causes inconvenience to the user; secondly, the current LED eye-protection table lamps are often designed to be lightweight, and their bases are often light. When the lighting mechanism is heavy, the table lamp is easy to tip over, posing a safety hazard. Utility Model Content

[0004] The present application proposes an LED eye-protection desk lamp with monitoring camera, which has the advantages of effectively supporting the lighting mechanism, improving the stability of the lighting mechanism during long-term use, and improving the overall stability of the desk lamp, so as to solve the problem that the shaft is easy to loosen after long-term use, causing the angle state of the lighting mechanism to be unstable, and the desk lamp is easy to tip over.

[0005] To achieve the above purpose, the present application adopts the following technical solution: an LED eye protection desk lamp capable of monitoring and video recording, comprising:

[0006] A fixing mechanism, used to support the lighting mechanism and ensure the stability of the desk lamp;

[0007] Lighting mechanism, for lighting;

[0008] The support mechanism is used to improve the stability of the fixing mechanism and the lighting mechanism. The support mechanism consists of a support assembly, a camera assembly and a limit assembly. The support assembly is vertically placed on the top of the fixing mechanism, and is used to fix and support the lighting mechanism to enhance the stability of the lighting mechanism after adjusting the angle. The camera assembly is movably sleeved on the outside of the support assembly, and is used to monitor and photograph the user, so as to facilitate recording the user's learning and working conditions. The limiting assembly is movably arranged on the outside of the support assembly below the camera assembly, which is not only used to counterweight the fixing mechanism and improve the placement stability of the fixing mechanism, but also used to limit and support the support assembly, so as to facilitate improving the stability of the vertical placement of the support assembly and adjusting the use height of the support assembly.

[0009] Furthermore, the fixing mechanism comprises:

[0010] A base, the base being placed on a desktop;

[0011] A knob is movably provided on one side of the top end of the base;

[0012] A bracket, wherein the other side of the top end of the base is fixedly connected to the bottom end of the bracket;

[0013] A rotating shaft, a rotating cavity is opened at the top of the bracket, and rotating shafts are fixedly sleeved on both side walls of the top of the bracket, and the rotating shaft passes through the rotating cavity.

[0014] Furthermore, the lighting mechanism comprises:

[0015] A rotating plate, one end of which is located in the rotating cavity of the bracket, and the rotating plate is movably sleeved with the rotating shaft, a rotating groove is provided at the bottom end of the rotating plate, and the cross-sectional shape of the rotating groove is composed of a plurality of triangles arranged linearly;

[0016] LED light board, the other end of the rotating plate is fixedly connected to the LED light board.

[0017] Furthermore, the support assembly includes:

[0018] A support column, the support column is composed of a round rod and a truncated cone, and the round rod is located below the truncated cone. The support column is vertically placed on the top of the base, and the support column is located below the rotating groove;

[0019] A support head, the top end of the support column is fixedly connected to the support head, and the shape of the support head is adapted to the rotation groove;

[0020] A threaded strip is fixedly provided on the outer wall of the upper half of the round rod of the support column.

[0021] Furthermore, the camera assembly includes:

[0022] A clamping piece, wherein a threaded hole is formed in the middle of the clamping piece, and the clamping piece is threadedly connected to the threaded strip through the threaded hole;

[0023] A camera is fixedly connected to the outer wall of the clamping member.

[0024] Furthermore, the limiting component includes:

[0025] A limiting body, wherein the limiting body is in the shape of a cuboid with two square faces, a limiting hole is provided in the middle of the limiting body, and the size of the limiting hole is adapted to the supporting column, the limiting bodies are provided in a certain number, and the limiting bodies are arranged vertically and linearly;

[0026] A limit block, the bottom end of the limit body is fixedly connected to the limit block, one limit body is correspondingly provided with four limit blocks, and the limit blocks are arranged at the four corners of the limit body, the top of the limit body is provided with a limit groove, and the position of the limit groove corresponds to the limit block, the top of the base is provided with a limit groove, and the arrangement of the limit grooves of the base is the same as that of the limit grooves of the limit body;

[0027] The movable component, the limiting body is movably connected with the movable component, and is used to change the overall shape of the limiting component to realize different functions of the limiting component to the supporting component.

[0028] Furthermore, the mobile component includes:

[0029] A movable body, a limiting cavity is provided on one side of the limiting body, and the limiting cavity is connected with the limiting hole and the limiting groove, the limiting body is movably connected with the movable body through the limiting cavity, a movable groove is provided on the top of the movable body, and the number of the movable grooves is four, and the arrangement of the four movable grooves is the same as the arrangement of the four limiting grooves.

[0030] This application has the following beneficial effects:

[0031] The present application provides an LED eye-protection desk lamp with monitoring and video recording. A supporting mechanism is arranged at the top of the base, and the supporting mechanism is composed of a supporting assembly and a limiting assembly. At the same time, a rotating groove is opened at the bottom end of the rotating plate. The limiting assembly is used to change the height of the supporting assembly and maintain the vertical stability of the supporting assembly, so that the supporting assembly can always be engaged with the rotating groove after the rotating plate adjusts its angle, thereby effectively improving the overall stability of the lighting mechanism. Even if looseness occurs between the rotating shaft and the rotating plate after long-term use, the rotating plate always maintains stability after the angle adjustment, thereby effectively improving the user's convenience and comfort.

[0032] By movably clamping a plurality of limit components on the top of the base, the counterweight of the base can be effectively enhanced, the stability of the base can be enhanced, the base can be prevented from tipping over, and the safety hazard of the desk lamp can be reduced.

[0033] By movably setting up the camera assembly outside the support assembly, the user can adjust the camera angle of the camera assembly by rotating the camera assembly on the outer wall of the support column according to needs, or can remove the camera assembly for precise filming, thereby effectively expanding the monitoring camera range of the camera assembly and improving the convenience of using the camera assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0035] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0036] Figure 1 It is a three-dimensional structural diagram of the entire utility model;

[0037] Figure 2 It is a cross-sectional three-dimensional structural diagram of the utility model as a whole;

[0038] Figure 3 For the utility model Figure 2 A magnified structural diagram;

[0039] Figure 4 It is a three-dimensional structural diagram of the fixing mechanism and the lighting mechanism in the utility model;

[0040] Figure 5 It is a three-dimensional structural diagram of the lighting mechanism and the rotating shaft in the utility model;

[0041] Figure 6 It is a three-dimensional structural diagram of the support mechanism in the utility model;

[0042] Figure 7 It is a three-dimensional structural diagram of the limit assembly when the limit hole is opened in the utility model;

[0043] Figure 8 It is a top-view cross-sectional three-dimensional structural diagram of the limit assembly when the limit hole is opened in the utility model;

[0044] Fig. 9 It is a three-dimensional structural diagram of the limit assembly when the limit hole is closed in the utility model;

[0045] Fig.10 It is a top-view cross-sectional three-dimensional structural diagram of the limit assembly when the limit hole is closed in the utility model;

[0046] Fig.11 It is a three-dimensional structural diagram of the separation of the limiting body and the moving body in the utility model.

[0047] In the figure: 1. fixing mechanism; 11. base; 12. knob; 13. bracket; 14. rotating shaft; 2. lighting mechanism; 21. rotating plate; 210. rotating groove; 22. LED light board; 3. supporting mechanism; 4. supporting assembly; 41. supporting column; 42. supporting head; 43. threaded strip; 5. camera assembly; 51. clamping member; 52. camera; 6. limiting assembly; 60. limiting cavity; 61. limiting body; 610. limiting hole; 62. limiting block; 620. limiting groove; 7. moving assembly; 71. moving body; 710. moving groove. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Embodiment 1

[0049] An LED eye protection desk lamp capable of monitoring and video recording, characterized in that it comprises:

[0050] See also Figure 1-Figure 2 , Figure 4 The fixing mechanism 1 is used to support the lighting mechanism 2 and ensure the stability of the desk lamp. The fixing mechanism 1 consists of a base 11, a knob 12, a bracket 13 and a rotating shaft 14. The base 11 is placed on the desktop. A knob 12 is movably provided on one side of the top of the base 11. The knob 12 is rotated to turn the light on and off, as well as change the brightness of the light. The other side of the top of the base 11 is fixedly connected to the bottom of the bracket 13. A rotating cavity is provided at the top of the bracket 13. The two side walls of the top of the bracket 13 are fixedly sleeved with a rotating shaft 14, and the rotating shaft 14 passes through the rotating cavity. The rotating shaft 14 can be used to realize the movable hinge between the bracket 13 and the rotating plate 21, thereby realizing the adjustment of the lighting angle of the rotating plate 21.

[0051] See also Figure 1-Figure 5 , the lighting mechanism 2 is used for lighting, and the lighting mechanism 2 consists of a rotating plate 21 and an LED light board 22. One end of the rotating plate 21 is located in the rotating cavity of the bracket 13, and the rotating plate 21 is movably connected to the rotating shaft 14. The rotating shaft 14 can be used to adjust the angle of the rotating plate 21 to improve the lighting comfort of the user. A rotating groove 210 is provided at the bottom end of the rotating plate 21, and the cross-sectional shape of the rotating groove 210 is composed of a plurality of triangular linear arrangements, which can cooperate with the camera assembly 5 to support and fix the rotating plate 21. The other end of the rotating plate 21 is fixedly connected to the LED light board 22. The LED light board 22 can provide the user with lights of different brightness, ensure a good visual environment in the desktop area, and effectively protect the user's eyes.

[0052] See also Figure 1-Figure 3 , Figure 6 The supporting mechanism 3 is used to improve the stability of the fixing mechanism 1 and the lighting mechanism 2. The supporting mechanism 3 is composed of a supporting component 4 and a limiting component 6.

[0053] See also Figure 1-Figure 3 , Figure 6 , support component 4, support component 4 is vertically placed at the top of the fixing mechanism 1, and is used to fix and support the lighting mechanism 2, and enhance the stability of the lighting mechanism 2 after adjusting the angle. The support component 4 is composed of a support column 41 and a support head 42. The support column 41 is composed of a round rod and a truncated cone, and the round rod is located below the truncated cone. The support column 41 is vertically placed at the top of the base 11, and the support column 41 is located below the rotating groove 210, which can provide conditions for supporting the rotating plate 21. The top of the support column 41 is fixedly connected to the support head 42, and the shape of the support head 42 is adapted to the rotating groove 210, which can effectively support and fix the rotating plate 21 in different angle states, thereby improving the overall stability of the lighting mechanism 2. Even if the rotating shaft 14 and the rotating plate 21 become loose after long-term use, the rotating plate 21 can always maintain the stability after the angle adjustment, thereby effectively improving the convenience and comfort of the user.

[0054] See also Figure 1-Figure 3 , Figure 6-Figure 11, the limiting component 6 is movably arranged outside the support component 4, which is not only used to counterweight the fixing mechanism 1 and improve the placement stability of the fixing mechanism 1, but also used to limit and support the support component 4, so as to improve the stability of the vertical placement of the support component 4 and adjust the use height of the support component 4. The limiting component 6 is composed of a limiting body 61, a limiting block 62 and a moving component 7. The limiting body 61 is in the shape of a rectangular parallelepiped with two square faces. A limiting hole 610 is provided in the middle of the limiting body 61, and the size of the limiting hole 610 is adapted to the support column 41. There are several limiting bodies 61, and several limiting bodies 61 are arranged vertically linearly. When the limiting body 61 is sleeved on the support column 41 through the limiting hole 610, the limiting body 61 can effectively enhance the support column 41 In order to achieve vertical stability, the bottom end of the limiting body 61 is fixedly connected to the limiting block 62, and four limiting blocks 62 are correspondingly arranged for one limiting body 61, and the limiting blocks 62 are arranged at the four corners of the limiting body 61. A limiting groove 620 is provided at the top of the limiting body 61, and the position of the limiting groove 620 corresponds to the limiting block 62. One limiting body 61 can be clamped with the limiting groove 620 on another limiting body 61 through the limiting block 62 thereon, thereby realizing a stable connection between the two limiting bodies 61. A limiting groove 620 is provided at the top of the base 11, and the arrangement of the limiting groove 620 of the base 11 is the same as that of the limiting groove 620 of the limiting body 61. The limiting body 61 can be clamped with the limiting groove 620 on the base 11 through the limiting block 62, thereby realizing that the limiting body 61 is stably placed on the top of the base 11.

[0055] See also Figure 1-Figure 3 , Figure 6-Figure 11 , the moving component 7, the limiting body 61 is movably connected with the moving component 7, which is used to change the overall shape of the limiting component 6, and realize the different functions of the limiting component 6 on the supporting component 4. The moving component 7 is composed of a moving body 71, and a limiting cavity 60 is opened on one side of the limiting body 61, and the limiting cavity 60 is connected with the limiting hole 610 and the limiting groove 620. The limiting body 61 is movably connected with the moving body 71 through the limiting cavity 60, and the moving body 71 can move laterally in the limiting body 61 along 70. When the moving body 71 is in an extended state, the limiting hole 610 is opened. At this time, the support column 41 is movably connected with the limiting body 61. When the moving body 71 is in a retracted state, the limiting hole 610 is closed, and at this time the support column 41 can only be placed above the moving body 71 and cannot be movably connected with the limiting body 61, thereby raising the height of the support column 41, so that the support column 41 can stably support the rotating plate 21 that is deflected upward. A moving groove 710 is opened at the top of the moving body 71, and the number of the moving grooves 710 is four. The arrangement of the four moving grooves 710 is the same as the arrangement of the four limiting grooves 620. When the moving body 71 is in the retracted state, the limiting block 62 on the upper limiting body 61 can effectively and stably clamp the moving body 71 in the limiting cavity 60 through the moving groove 710 and the limiting groove 620, thereby improving the stability of the setting of the moving body 71. Embodiment 2

[0056] Based on Example 1, please refer to Figure 1-Figure 3 , Figure 6 The support assembly 4 also includes a threaded strip 43. The outer wall of the upper half of the round rod of the support column 41 is fixedly provided with a threaded strip 43, which can be used in conjunction with the camera assembly 5 to meet the monitoring camera requirements of the camera assembly 5.

[0057] See also Figure 1-Figure 3 , Figure 6 The support mechanism 3 also includes a camera assembly 5, which is movably sleeved on the outside of the support assembly 4, and the camera assembly 5 is located above the limit assembly 6, and is used to monitor and photograph the user, so as to record the user's learning and working conditions. The camera assembly 5 is composed of a clamping member 51 and a camera 52. A threaded hole is provided in the middle of the clamping member 51, and the clamping member 51 is threadedly connected to the threaded bar 43 through the threaded hole. The user can change the shooting angle of the camera assembly 5 on the support assembly 4 by rotating the clamping member 51, and can also remove the camera assembly 5 from the support assembly 4 by rotating the clamping member 51, so as to adapt to different camera requirements. The outer wall of the clamping member 51 is fixedly connected with a camera 52, and the camera 52 has the functions of remote monitoring, voice intercom, etc., so as to improve the work efficiency and learning efficiency of the user.

[0058] The working principle of the use method of the utility model is as follows:

[0059] When the desk lamp needs to be installed, firstly, the limiting assembly 6 is stably placed on the top of the base 11 as required by aligning and snapping the limiting block 62 and the limiting groove 620, and the limiting assemblies 6 are accumulated one by one, and then the support column 41 is inserted into the limiting hole 610 to ensure the stability of the vertical placement of the support column 41, and finally the support head 42 is snapped with the rotating groove 210 of the rotating plate 21, thereby realizing the support and fixation of the lighting mechanism 2 by the support assembly 4. When the lighting mechanism 2 needs to deflect upward to adjust the lighting angle, the support column 41 is moved up so that the support head 42 always supports the bottom of the rotating plate 21, and then a number of moving bodies 71 are pushed back into the limiting body 61 as required, and The pushing order of the limit assembly 6 is from bottom to top. At this time, the bottom end of the support column 41 is in contact with the movable body 71 that is pushed back, and the limit body 61 that is not pushed back by the movable body 71 also effectively supports the main part of the fixed support assembly 4, thereby enabling the support assembly 4 to always be engaged with the rotating groove 210 after the rotating plate 21 adjusts the angle, ensuring that the support assembly 4 always vertically and stably supports the lighting mechanism 2, thereby effectively improving the overall stability of the lighting mechanism 2, even if there is a loose problem between the rotating shaft 14 and the rotating plate 21 after long-term use of the desk lamp, the rotating plate 21 always maintains stability after the angle is adjusted, thereby effectively improving the user's convenience and comfort.

[0060] When the user needs to adjust the shooting angle of the camera 52, the clamping member 51 can be rotated along the threaded bar 43 to a suitable angle. When the user needs to remove the camera 52 for precise shooting, the clamping member 51 can be rotated upward along the threaded bar 43 until the clamping member 51 is disengaged from the threaded bar 43. The camera assembly 5 can be removed from the supporting assembly 4. At this time, the user can hold the camera assembly 5 to conduct voice intercom with other users, which is convenient for other users to monitor accurately, thereby effectively expanding the monitoring and shooting range of the camera assembly 5 and improving the convenience of using the camera assembly 5.

Claims

1. An LED eye protection desk lamp capable of monitoring and video recording, characterized in that: include: A fixing mechanism (1) for supporting the lighting mechanism (2) and ensuring the stability of the desk lamp; A lighting mechanism (2), used for lighting; A support mechanism (3) is used to improve the stability of the fixing mechanism (1) and the lighting mechanism (2). The support mechanism (3) is composed of a support assembly (4), a camera assembly (5) and a limit assembly (6). The support assembly (4) is vertically placed on the top of the fixing mechanism (1) and is used to fix and support the lighting mechanism (2) to enhance the stability of the lighting mechanism (2) after adjusting the angle. The camera assembly (5) is movably sleeved on the outside of the support assembly (4) and is used to monitor and photograph a user, so as to facilitate recording the user's learning and working conditions. A limit assembly (6) is movably arranged on the outside of the support assembly (4) below the camera assembly (5). The limit assembly (6) is not only used to counterweight the fixing mechanism (1) and improve the placement stability of the fixing mechanism (1), but also used to limit and support the support assembly (4) to facilitate improving the stability of the vertical placement of the support assembly (4) and adjusting the use height of the support assembly (4).

2. The LED eye protection desk lamp capable of monitoring and video recording according to claim 1, characterized in that: The fixing mechanism (1) comprises: A base (11), the base (11) being placed on a table; A knob (12), wherein a knob (12) is movably provided on one side of the top end of the base (11); A bracket (13), wherein the other side of the top end of the base (11) is fixedly connected to the bottom end of the bracket (13); A rotating shaft (14), a rotating cavity is formed at the top of the bracket (13), and the rotating shaft (14) is fixedly sleeved on both side walls of the top of the bracket (13), and the rotating shaft (14) passes through the rotating cavity.

3. The LED eye protection desk lamp capable of monitoring and video recording according to claim 2, characterized in that: The lighting mechanism (2) comprises: A rotating plate (21), one end of the rotating plate (21) is located in the rotating cavity of the bracket (13), and the rotating plate (21) is movably sleeved with the rotating shaft (14), a rotating groove (210) is formed at the bottom end of the rotating plate (21), and the cross-sectional shape of the rotating groove (210) is composed of a plurality of triangles arranged linearly; An LED light board (22), wherein the other end of the rotating plate (21) is fixedly connected to the LED light board (22).

4. The LED eye protection desk lamp capable of monitoring and video recording according to claim 3, characterized in that: The support assembly (4) comprises: A support column (41), the support column (41) being composed of a round rod and a truncated cone, the round rod being located below the truncated cone, the support column (41) being vertically placed on the top of the base (11), and the support column (41) being located below the rotating groove (210); A support head (42), wherein the top end of the support column (41) is fixedly connected to the support head (42), and the shape of the support head (42) is adapted to the rotation groove (210); A threaded strip (43), wherein the outer wall of the upper half of the round rod of the support column (41) is fixedly provided with the threaded strip (43).

5. The LED eye protection desk lamp capable of monitoring and video recording according to claim 4, characterized in that: The camera assembly (5) comprises: A clamping member (51), wherein a threaded hole is formed in the middle of the clamping member (51), and the clamping member (51) is threadedly connected to the threaded strip (43) through the threaded hole; A camera (52), wherein the outer wall of the clamping member (51) is fixedly connected with the camera (52).

6. The LED eye protection desk lamp capable of monitoring and video recording according to claim 5, characterized in that: The limiting component (6) comprises: A limiting body (61), the limiting body (61) being in the shape of a cuboid with two square faces, a limiting hole (610) being provided in the middle of the limiting body (61), and a size of the limiting hole (610) being adapted to the support column (41), a plurality of the limiting bodies (61) being provided, and the plurality of limiting bodies (61) being arranged vertically and linearly; A limit block (62), wherein the bottom end of the limit body (61) is fixedly connected to the limit block (62), one limit body (61) is provided with four limit blocks (62), and the limit blocks (62) are arranged at four corners of the limit body (61), the top end of the limit body (61) is provided with a limit groove (620), and the position of the limit groove (620) corresponds to the limit block (62), the top end of the base (11) is provided with a limit groove (620), and the arrangement of the limit groove (620) of the base (11) is the same as the arrangement of the limit groove (620) of the limit body (61); The movable assembly (7) is movably sleeved with the limiting body (61) and is used to change the overall shape of the limiting assembly (6) and realize different functions of the limiting assembly (6) on the supporting assembly (4).

7. The LED eye protection desk lamp capable of monitoring and video recording according to claim 6, characterized in that: The moving component (7) comprises: A movable body (71), a limiting cavity (60) is provided on one side of the limiting body (61), and the limiting cavity (60) is in communication with the limiting hole (610) and the limiting groove (620), the limiting body (61) is movably sleeved with the movable body (71) via the limiting cavity (60), a movable groove (710) is provided on the top of the movable body (71), and the number of the movable grooves (710) is four, and the arrangement of the four movable grooves (710) is the same as the arrangement of the four limiting grooves (620).

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