Fixed lighting device capable of controlling lighting angle

Abstract

The fixed lighting device capable of controlling the lighting angle comprises a supporting part, a power source part, a mechanical rotating part and a lighting part, and the power source part is installed in the supporting part; the mechanical rotating part is mounted in the supporting part; the lighting part is mounted above the supporting part; the supporting part comprises a base, a shell, and a lower supporting plate, an upper supporting plate and a side supporting plate which are arranged in the shell; the base is located at the bottom; the shell is mounted at the top of the base; a through hole is formed in the middle of the lower supporting plate; the upper supporting plate is fixed at the top of the shell and is provided with a mounting hole in the middle; the side supporting plate is fixedly connected between the base and the lower supporting plate; and the mechanical rotating part comprises a horizontal angle adjusting mechanism and a vertical angle adjusting mechanism. The fixed illuminating device can be fixedly installed at a certain position, the illuminating angle of the illuminating lamp can be adjusted by rotating the first handle, the fixedly installed illuminating device can fix a line, and the safe and civilized construction effect of a construction site is improved.

Description

Technical Field

[0001] The present invention relates to the field of construction engineering tools, and particularly to a fixed lighting device capable of controlling the lighting angle. Background Art

[0002] During the night construction or construction in a dark environment of a construction project, in order to ensure the safety and normality of construction, a certain number of lighting devices need to be set up. During traditional lighting, in order to ensure normal lighting, there are often phenomena of unauthorized wiring, with serious potential safety hazards, or the desired lighting effect cannot be achieved after the lighting is installed, and the lighting device needs to be reinstalled, resulting in an increase in additional workload. In order to reduce potential safety hazards and improve the safety and civilization construction effect of the construction site, a more objective and better lighting device is needed. Summary of the Invention

[0003] To solve the above problems, the purpose of the present invention is to provide a fixed lighting device capable of controlling the lighting angle. The use of this fixed lighting device can effectively reduce potential safety hazards and has a good lighting effect.

[0004] The purpose of the present invention is achieved through the following technical solutions: A fixed lighting device capable of controlling the lighting angle includes a support part, a power supply part, a mechanical rotation part, and a lighting part. The power supply part is installed in the support part and is used to supply power to the lighting part; the mechanical rotation part is installed in the support part; the lighting part is installed above the support part; the support part includes a base, a housing, and a lower support plate, an upper support plate, and a side support plate arranged in the housing; the base is located at the bottom; the housing is installed on the top of the base; the lower support plate is horizontally arranged and has a through hole in the middle; the upper support plate is fixed on the top of the housing and has a mounting hole in the middle; the side support plate is fixedly connected between the base and the lower support plate; the mechanical rotation part includes a horizontal angle adjustment mechanism and a vertical angle adjustment mechanism; the horizontal angle adjustment mechanism includes a main shaft, a rotating disc, and a first transmission mechanism; the main shaft is vertically arranged in the housing, the lower end of the main shaft is rotatably installed on the top of the base and extends into the base, and the upper end of the main shaft sequentially passes upward through the through hole and the mounting hole and is hinged to the bottom of the lighting part through a first hinge; the rotating disc is rotatably installed in the mounting hole and is coaxially fixed outside the main shaft; the first transmission mechanism is installed in the housing and can drive the main shaft to rotate axially; the vertical angle adjustment mechanism includes a disc, a chute, a slide bar, a control bar, and a second transmission mechanism; the disc is movably sleeved outside the main shaft and is located between the base and the lower support plate; the chute is fixedly arranged at the bottom of the lighting part; the slide bar is slidably installed in the chute; the lower end of the control bar is fixed on the disc, and its upper end sequentially passes through the through hole and the rotating disc and is hinged to the bottom of the slide bar through a second hinge; the second transmission mechanism is installed in the housing and can drive the disc to move up and down while not affecting the axial rotation of the disc.

[0005] The first transmission mechanism includes a first wheel shaft, a first driving gear and a first driven gear; both ends of the first wheel shaft are rotatably installed on the housing and the side support plate and can rotate under the drive of an external force; the first driving gear is coaxially installed on the first wheel shaft and its lower end extends into the base from the notch; the first driven gear is coaxially fixed on the main shaft and is located inside the base, and the first driving gear and the first driven gear mesh with each other.

[0006] The second transmission mechanism includes a second wheel shaft, a third wheel shaft, a second driving gear, a second driven gear, a third driven gear, a guide tube and a rack; both ends of the second wheel shaft are rotatably installed on the side support plate and the housing and can rotate under the drive of an external force; both ends of the third wheel shaft are rotatably installed on both sides of the inner wall of the housing and are parallel to the second wheel shaft; the second driving gear is coaxially fixed on the second wheel shaft; the second driven gear and the third driven gear are both coaxially fixed on the third wheel shaft, and the second driven gear meshes with the second driving gear; the guide tubes are two hollow tube bodies respectively fixed on the top of the base and the bottom of the lower support plate, and the two guide tubes are on the same straight line; the rack is vertically arranged between the two guide tubes, and both ends of the rack are respectively slidably sleeved in the two guide tubes. A tooth meshing with the third driven gear is provided in the middle of the side of the rack facing away from the disc, and a groove is provided on the side of the rack facing the disc. The outer edge of the disc is embedded in the groove and can rotate freely. The rack can move up and down along the guide tube driven by the third driven gear and drive the disc to move up and down through the groove. The hinge shafts of the first hinge and the second hinge are parallel to each other, and at the same time, the sliding direction of the sliding rod is perpendicular to the hinge shaft of the first hinge.

[0007] Further, the number of the second transmission mechanisms is at least one, such as one, two, three, four or more. More preferably, considering stability, operation difficulty and cost, the number of the second transmission mechanisms is preferably two. The two second transmission mechanisms are symmetrically arranged, and the second driving gears of the two second transmission mechanisms mesh with each other. Only by driving the second driving gear of one second transmission mechanism, the second driving gear of the other second transmission mechanism and the rack can be driven to move up and down synchronously.

[0008] Further, in order to reduce potential safety hazards, the power supply part is a storage battery installed in the base. The storage battery is electrically connected to the lighting part through a wire. The main shaft is a hollow tubular structure. The wire extends from inside the base along the main shaft to the upper end and is electrically connected to the sight lamp in the lighting part to fix the circuit and reduce potential safety hazards.

[0009] The beneficial effects of the present invention are as follows: The fixed lighting device described in the present invention can be fixedly installed at a certain position. By rotating the first handle, the irradiation angle of the lighting lamp can be adjusted. The fixedly installed lighting device can fix the circuit and improve the safety and civilized construction effect at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The content of the present invention will be further described in detail below with reference to the accompanying drawings.

[0011] Figure 1 It is a schematic diagram of the external structure of the fixed lighting device described in the present invention.

[0012] Figure 2 It is a schematic diagram of the internal structure of the fixed lighting device described in the present invention.

[0013] Figure 3 It is a schematic diagram of the installation position of the first transmission mechanism described in the present invention.

[0014] Figure 4 It is a schematic diagram of the installation position of the second transmission mechanism described in the present invention.

[0015] Figure 5 It is Figure 1 a partial enlarged view of the part above the upper support plate in the right view of

[0016] Figure 6 It is Figure 1 a partial enlarged view of the connection part between the lighting part and the control bar in the rear view of

[0017] As shown in the figure: 1 - base, 101 - notch, 2 - outer shell, 3 - lower support plate, 31 - through hole, 4 - upper support plate, 41 - mounting hole, 5 - side support plate, 6 - main shaft, 7 - rotating disk, 8 - first transmission mechanism, 81 - first wheel shaft, 82 - first driving gear, 83 - first driven gear, 9 - first hinge, 10 - disk, 11 - chute, 12 - sliding rod, 13 - control bar, 14 - second transmission mechanism, 141 - second wheel shaft, 142 - third wheel shaft, 143 - second driving gear, 144 - second driven gear, 145 - third driven gear, 146 - guide tube, 147 - rack, 148 - groove, 15 - second hinge, 16 - housing, 17 - transparent plate, 18 - first handle, 19 - second handle. DETAILED DESCRIPTION OF THE INVENTION

[0018] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope protected by the present invention.

[0019] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present invention can be implemented.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. It should be noted that the terms "including", "comprising", or any other variant are intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article, or device. Embodiment 1

[0021] As Figures 1-6 shown, this embodiment provides a fixed lighting device capable of controlling the lighting angle, including a support part, a power supply part, a mechanical rotation part, and a lighting part.

[0022] The power supply part is installed in the support part, and the power supply part mainly supplies power to the lighting part by using a storage battery or directly connecting to the mains power supply, etc.

[0023] The lighting unit is installed above the support unit. The lighting unit includes a cuboid-shaped housing 16 and a lighting lamp installed inside the housing. A transparent plate 17 is installed at the front end of the housing 16, and the light-emitting part of the lighting lamp faces the transparent plate 17. The lighting lamp is electrically connected to the power supply unit.

[0024] The support unit includes a base 1, a housing 2, and a lower support plate 3, an upper support plate 4, and a side support plate 5 arranged inside the housing.

[0025] The base 1 is located at the bottom of the entire fixed lighting device. Its interior is hollow, and a rectangular notch 101 communicating with its interior is provided on one side of the top of the base 1.

[0026] The housing 2 is located above the base 1. The bottom of the housing 2 is installed on the top of the base 1, and the top of the housing 2 is open.

[0027] The lower support plate 3 is horizontally arranged inside the housing 2, and a through hole 31 is provided in the middle of the lower support plate 3.

[0028] The upper support plate 4 is fixed to the top of the housing 2 (sealing the open top of the housing 2), and an installation hole 41 is provided in the middle of the upper support plate 4. The installation hole 41 is located directly above the through hole 31.

[0029] The side support plate 5 is arranged laterally near the notch 101 at the top of the base 1. The bottom of the side support plate 5 is fixedly connected to the top of the base 1 (the side near the notch), and the top of the side support plate 5 is fixedly connected to the lower support plate 3.

[0030] The mechanical rotation unit is installed inside the support unit. The mechanical rotation unit includes a horizontal angle adjustment mechanism and a vertical angle adjustment mechanism.

[0031] The horizontal angle adjustment mechanism includes a main shaft 6, a rotating disk 7, and a first transmission mechanism 8.

[0032] The main shaft 6 is vertically arranged inside the housing 2. The lower end of the main shaft 6 is rotatably installed on the top of the base 1 and extends into the base 1. The upper end of the main shaft 6 sequentially passes upward through the through hole 31 (of the lower support plate 3) and the installation hole 41 (of the upper support plate 4), and then is hinged to the bottom of the lighting unit (housing 16) through a first hinge 9.

[0033] The rotating disk 7 is rotatably installed in the installation hole 41 and coaxially fixed outside the main shaft 6. The rotating disk 7 can rotate with the main shaft 6 in the installation hole 41.

[0034] The first transmission mechanism 8 is installed inside the housing 2 and can drive the main shaft 6 to rotate axially, thereby enabling the lighting unit to rotate axially. As Figure 3 shown, the first transmission mechanism includes a first wheel shaft 81, a first driving gear 82, and a first driven gear 83.

[0035] The first axle 81 is transversely arranged in the shell 2, and both ends of the first axle 81 are rotatably mounted on the shell 2 and the side support plate 5 and can rotate under the drive of an external force (an external driving mechanism such as a handle or a motor). At the same time, one end of the first axle 81 extends out of the shell 2 and is transmission-connected to the external driving mechanism.

[0036] The first driving gear 82 is coaxially mounted on the first axle 81 , and the lower end of the first driving gear 82 extends into the base 1 from the notch 101 on the top side of the base 1 .

[0037] The first driven gear 83 is coaxially fixed on the main shaft 6 and is located inside the base 1, and the first driving gear 82 and the first driven gear 83 are meshed with each other. The first driven gear 83 can rotate axially under the drive of the first driving gear 82, thereby driving the main shaft 6 to rotate axially, causing the lighting part to rotate, thereby adjusting the horizontal angle of the lighting part.

[0038] The vertical angle adjustment mechanism includes a disc 10 , a slide slot 11 , a slide rod 12 , a control bar 13 and a second transmission mechanism 14 .

[0039] like Figure 4 As shown, the disc 10 is movably sleeved outside the main shaft 6 and is located between the base 1 and the lower support plate 3. The disc 10 is a circular plate that can move up and down between the base 1 and the lower support plate 3 along the main shaft 6.

[0040] like Figure 5 As shown, the slide groove 11 is fixedly arranged at the bottom of the shell 16 of the lighting part. The slide groove 11 is a groove plate fixed at the bottom of the shell 16. The bottom of the groove plate is concave to form a strip groove arranged along the length direction of the lighting part. The cross-section of the strip groove is T-shaped, and the strip groove is perpendicular to the hinge axis of the first hinge 9.

[0041] like Figure 6 As shown, the slide bar 12 is slidably installed in the slide groove 11 (the strip groove at the bottom), and the slide bar 12 can slide back and forth along the slide groove 11.

[0042] The control bar 13 is a rod disposed on the side of the main shaft 6. The lower end of the control bar 13 is fixed to the disk 10. The upper end of the control bar 13 sequentially passes upward through the through hole 31 (of the lower support plate 3) and the rotating disk 7 and is hinged to the bottom of the sliding rod 12 by a second hinge 15 (one plate of the second hinge 15 extends into the sliding groove 11 from the strip-shaped groove at the bottom of the sliding groove 11 and is fixedly connected to the sliding rod, and can slide back and forth along the strip-shaped groove. The other plate of the second hinge 15 is fixedly connected to the upper end of the control bar 13. The two plates of the second hinge 15 are rotatably connected by a hinge shaft). The hinge shaft of the first hinge 9 is parallel to the hinge shaft of the second hinge 15. At the same time, the sliding direction of the sliding rod 12 is perpendicular to the hinge shaft of the first hinge 9. The control bar 13 can move up and down under the drive of the disk 10 and push the sliding rod 12 to slide along the sliding groove 11, thereby causing the lighting unit to rotate along the first hinge 9 and realizing the adjustment of the vertical angle of the lighting unit.

[0043] The second transmission mechanism 14 is installed in the housing 2 and can drive the disk 10 to move up and down while not affecting the axial rotation of the disk 10. As Figure 4 shown, each second transmission mechanism 14 includes a second wheel shaft 141, a third wheel shaft 142, a second driving gear 143, a second driven gear 144, a third driven gear 145, a guide tube 146, and a rack 147.

[0044] The second wheel shaft 141 is horizontally disposed (perpendicular to the main shaft 6). The two ends of the second wheel shaft 141 are respectively rotatably installed on the side support plate 5 and the housing 2. The second wheel shaft 141 can be rotated by an external force (an external driving mechanism such as a handle or a motor), and at the same time, one end of the second wheel shaft 141 extends out of the housing 2 and is in transmission connection with the external driving mechanism.

[0045] The two ends of the third wheel shaft 142 are respectively rotatably installed on both sides of the inner wall of the housing 2 and are parallel to the second wheel shaft 141.

[0046] The second driving gear 143 is coaxially fixed to the second wheel shaft 141 and can rotate with the second wheel shaft 141.

[0047] The second driven gear 144 and the third driven gear 145 are both coaxially fixed to the third wheel shaft 142, and the second driven gear 144 meshes with the second driving gear 143.

[0048] The guide tubes 146 are two hollow tubes. One guide tube 146 is vertically fixed to the top of the base 1, and the other is vertically fixed to the bottom of the lower support plate 3. The two guide tubes 146 are on the same straight line. A spring is disposed in each guide tube 146, and the two ends of the spring are respectively connected to the guide tube 146 and the rack 147.

[0049] The rack 147 is vertically arranged between the two guide tubes 146. The two ends of the rack 147 are rod-shaped structures. The two ends of the rack 147 are respectively slidably sleeved in the upper and lower guide tubes 146. The springs in the two guide tubes 146 support the rack 147 so that the rack 147 is in a suspended state, thereby ensuring that the rack 147 has sufficient space for upward and downward displacement. A tooth meshing with the third driven gear 145 is provided in the middle of the side of the rack 147 facing away from the disk 10; A groove 148 is provided on one side of the disk 10, and the groove 148 is composed of two plates respectively located on the upper and lower sides of the disk 10 and parallel to the disk 10. The outer edge of the disk 10 is embedded in the groove 148 and can rotate freely. The rack 147 can move up and down along the guide tube 146 driven by the third driven gear 145 and drive the disk 10 to move up and down through the groove 148. The up and down movement of the disk 10 drives the lighting part to rotate through the control bar 13, thereby realizing the adjustment of the vertical angle of the lighting part.

[0050] In consideration of stability, operational difficulty and cost, the number of the second transmission mechanisms 14 is set to two, the two second transmission mechanisms 14 are symmetrically arranged, and the second driving gears 143 of the two second transmission mechanisms 14 are meshed with each other, that is, only the second wheel axle 141 of one of the second transmission mechanisms 14 needs to be connected to an external driving mechanism (such as a handle or a motor) to drive the two second transmission mechanisms 14 to operate synchronously. Working principle:

[0051] (1) Horizontal angle adjustment of lighting unit The horizontal angle adjustment of the lighting unit is achieved through a horizontal angle adjustment mechanism, and the driving mode of the horizontal angle adjustment mechanism is manual or electric, specifically: the end of the first wheel shaft 81 extends out of the housing 2 and is transmission-connected to the first handle 18 or the motor. When adjusting, by shaking the first handle 18 or starting the motor, the first wheel shaft 81 and the first driving gear 82 coaxially connected thereto are rotated, thereby driving the first driven gear 83 meshing with the first driving gear 82 to rotate, and the rotation of the first driven gear 83 drives the main shaft 6, the rotating disk 7 and the lighting unit to rotate, thereby adjusting the horizontal position of the lighting unit. In addition, when the lighting unit and the rotating disk 7 rotate, the control bar 13 and the disk 10 will be driven to rotate synchronously and adaptively to ensure the normal vertical angle adjustment.

[0052] (2) Vertical angle adjustment of lighting unit The vertical angle adjustment of the lighting unit is achieved through a vertical angle adjustment mechanism. The driving mode of the vertical angle adjustment mechanism is manual or electric. Specifically: the end of the second round shaft 141 extends out of the housing 2 and is connected with a second handle 19 or a motor. During adjustment, by shaking the second handle 19 or starting the motor, the second round shaft 141 and the second driving gear 143 coaxially connected thereto rotate, thereby driving the second driven gear 144, the third round shaft 142 and the third driven gear 145 to rotate. The rotation of the third driven gear 145 drives the rack 146 to move up and down. The up and down movement of the rack 146 drives the disc 10 to move up and down along the main shaft 6 through the groove 148 on its back. While the disc 10 moves, it also drives the control bar 13 to move up and down synchronously. The slide bar 12 rotates around the second hinge 15 and moves a certain distance along the slide groove 11 under the push of the control bar 13, thereby causing the lighting unit to rotate along the first hinge 9, realizing the vertical angle adjustment of the lighting unit. Embodiment 2

[0053] The difference between this embodiment and Embodiment 1 lies in: In order to reduce potential safety hazards, the power supply unit is a storage battery. The storage battery is electrically connected to the lighting unit through wires. The main shaft 6 is a hollow tubular structure. Two wires extend from the base along the main shaft 6 to the upper end and are electrically connected to the aiming lamp in the lighting unit. A control switch is connected to one of the wires, and the control switch is installed on the outer wall of the housing 2 to standardize the wiring, avoid the exposure of the wires, and reduce potential safety hazards.

[0054] Other details not elaborated in the present invention are all well-known conventional technologies in the art.

[0055] It should be noted that the term "comprising", "including" or any other variant is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific embodiments. Any modification, equivalent replacement, improvement, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A fixed lighting device with controllable lighting angle, comprising a support part, a power supply part, a mechanical rotation part and a lighting part; characterized in that: The support part includes a base, a housing, and a lower support plate, an upper support plate and a side support plate arranged in the housing; the base is located at the bottom; the housing is installed on the top of the base; the lower support plate is horizontally arranged and has a through hole in the middle thereof; the upper support plate is fixed on the top of the housing and has a mounting hole in the middle thereof; the side support plate is fixedly connected between the base and the lower support plate; The mechanical rotation part includes a horizontal angle adjustment mechanism and a vertical angle adjustment mechanism; The horizontal angle adjustment mechanism includes a main shaft, a rotating disk and a first transmission mechanism; the main shaft is vertically arranged in the housing, the lower end of the main shaft is rotatably installed on the top of the base and extends into the base, and the upper end of the main shaft sequentially passes upward through the through hole and the mounting hole and then is hinged to the bottom of the lighting part; the rotating disk is rotatably installed in the mounting hole and coaxially fixed outside the main shaft; the first transmission mechanism is installed in the housing and can drive the main shaft to rotate axially; The vertical angle adjustment mechanism includes a disk, a chute, a slide bar, a control bar and a second transmission mechanism; the disk is movably sleeved outside the main shaft and is located between the base and the lower support plate; the chute is fixedly arranged at the bottom of the lighting part; the slide bar is slidably installed in the chute; the lower end of the control bar is fixed on the disk, and its upper end sequentially passes through the through hole and the rotating disk and then is hinged to the bottom of the slide bar; the second transmission mechanism is installed in the housing and can drive the disk to move up and down, without affecting the axial rotation of the disk.

2. The fixed lighting device with controllable lighting angle according to claim 1, characterized in that: The first transmission mechanism includes a first wheel shaft, a first driving gear and a first driven gear; the two ends of the first wheel shaft are rotatably installed on the housing and the side support plate and can rotate under the drive of an external force; the first driving gear is coaxially installed on the first wheel shaft and its lower end extends into the base from the notch; the first driven gear is coaxially fixed on the main shaft and is located inside the base, and the first driving gear and the first driven gear are meshed with each other.

3. The fixed lighting device with controllable lighting angle according to claim 2, characterized in that: The end of the first wheel shaft extends out of the housing and is drivingly connected with a first handle.

4. The fixed lighting device with controllable lighting angle according to claim 1, characterized in that: The second transmission mechanism includes a second wheel shaft, a third wheel shaft, a second driving gear, a second driven gear, a third driven gear, a guide tube, and a rack; both ends of the second wheel shaft are rotatably installed on the side support plate and the housing and can rotate under the drive of an external force; both ends of the third wheel shaft are rotatably installed on both sides of the inner wall of the housing and are parallel to the second wheel shaft; the second driving gear is coaxially fixed on the second wheel shaft; both the second driven gear and the third driven gear are coaxially fixed on the third wheel shaft, and the second driven gear meshes with the second driving gear; the guide tubes are two hollow tube bodies respectively fixed to the top of the base and the bottom of the lower support plate, and the two guide tubes are on the same straight line; the rack is vertically arranged between the two guide tubes, and both ends of the rack are respectively slidably sleeved in the two guide tubes. A tooth meshing with the third driven gear is provided in the middle of the side of the rack facing away from the disc, and a groove is provided on the side of the rack facing the disc. The outer edge of the disc is embedded in the groove and can rotate freely. The rack can move up and down along the guide tube driven by the third driven gear and drive the disc to move up and down through the groove.

5. The fixed lighting device with controllable lighting angle according to claim 4, wherein: The number of the second transmission mechanisms is at least one.

6. The fixed lighting device with controllable lighting angle according to claim 5, characterized in that: The number of the second transmission mechanisms is two. The two second transmission mechanisms are symmetrically arranged, and the second driving gears of the two second transmission mechanisms mesh with each other.

7. The fixed lighting device with controllable lighting angle according to claim 4, wherein: A spring is arranged in the guide tube, and both ends of the spring are respectively connected to the guide tube and the rack.

8. The fixed lighting device with controllable lighting angle according to claim 4, characterized in that: The end of the second wheel shaft extends out of the housing and is connected with a second handle.

9. The fixed lighting device with controllable lighting angle according to claim 1, wherein: The upper end of the main shaft is hinged to the bottom of the lighting part through a first hinge, and the upper end of the control bar is hinged to the bottom of the sliding rod through a second hinge; the hinge shaft of the first hinge is parallel to the hinge shaft of the second hinge, and at the same time, the sliding direction of the sliding rod is perpendicular to the hinge shaft of the first hinge.

10. The fixed lighting device capable of controlling the lighting angle according to claim 1, wherein: The power supply part is a storage battery installed in the base. The storage battery is electrically connected to the lighting part through a wire. The main shaft is a hollow tubular structure, and the wire extends from the base along the main shaft to the upper end and is electrically connected to the sight lamp in the lighting part.

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