Illuminating device for biomedical examination of oral cavity and ear-nose-throat department

Abstract

The invention discloses a lighting device for biomedical examination of the oral cavity and the ear-nose-throat department, and belongs to the technical field of biomedical examination. The fixed column casing is fixedly connected to the upper end of the base; the movable column is connected to the outer wall of the fixed column casing in a sliding manner; and the mounting plate is fixedly connected to the top of the moving column. The motor drives the driving friction wheel to be alternately connected with the different driven friction wheels, and step-by-step adjustment of the orientation direction and the left-right angle of the illuminating lamp is achieved. And through cooperation of the stopping part and the friction lines, it is ensured that the rotating part on one side is fixed and the rotating part on the other side is precisely driven in the adjusting process, and angle deviation is avoided. And the linkage design of the transmission strip-shaped rod and the clamping groove ensures the reliability of power transmission, so that the illuminating lamp always faces the front during direction adjustment, and the requirements of illumination direction stability and multi-angle coverage in oral cavity and ear-nose-throat department examination are met.

Description

Technical Field

[0001] This application relates to the field of biomedical examination technology, and more specifically, to an illumination device for oral and otolaryngological biomedical examinations. Background Technology

[0002] Biomedical examination lighting devices in dentistry and otolaryngology are designed to provide sufficient light so that doctors can clearly see details when examining the oral cavity and ear, nose, and throat areas.

[0003] For example, Chinese Patent Publication No. CN119949731A discloses the following technical solution: A lighting auxiliary device for dental examination, comprising a pole, and further comprising: a horizontally rotating crossbar rotatably connected to the upper end of the pole, a vertically rotating rod hinged to the end of the horizontally rotating crossbar, and a rotating rod rotatably connected to the end of the vertically rotating rod in the horizontal direction; a vertically rotating block hinged to the end of the rotating rod, a mounting sleeve rotatably connected to the end of the rotating block, a concave frame provided on the mounting sleeve, an illumination box rotatably connected inside the concave frame, and an illumination lamp installed on the illumination box; a limiting rotation component and a pressure buffer component are provided on the horizontally rotating crossbar, the limiting rotation component being used to fix the vertically rotating rod in a horizontal state.

[0004] The existing technology has the following problems: The aforementioned devices lack precision and flexibility in adjusting the angle of the lighting, whether it be the orientation, left / right angle, or tilt angle. Angle deviations are prone to occur during adjustment, and multi-degree-of-freedom flexible adjustments are difficult to achieve. Furthermore, their ability to adapt lighting to complex examination areas in dentistry and otolaryngology is limited. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an illumination device for oral and otolaryngological biomedical examinations, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this application provides a lighting device for oral and otolaryngological biomedical examinations, comprising: a base; a fixed column tube fixedly connected to the upper end of the base; a movable column slidably connected to the outer wall of the fixed column tube; and a mounting plate fixedly connected to the top of the movable column. The top of the mounting plate is rotatably connected to a rotating cylinder and a rotating rod. An installation rod is fixedly connected to the outer wall of the rotating cylinder. A fixed cylinder is fixedly connected to the other end of the installation rod. A connecting block A is fixedly connected to the upper end of the rotating rod. A connecting rod is rotatably connected to the upper end of connecting block A via a pin. A connecting block B is rotatably connected to the other end of the connecting rod via a pin. An installation shaft is rotatably connected to the bottom of connecting block B. An adjustment assembly is provided at the bottom of the installation shaft. A lighting lamp body is mounted on the installation shaft via the adjustment assembly. A motor is fixedly connected to the bottom of the mounting plate. A transmission shaft is fixedly connected to the output shaft of the motor. An active friction wheel is movably sleeved on the outer wall of the transmission shaft. Driven friction wheels A and B are fixedly sleeved on the outer walls of the rotating cylinder and the rotating rod, respectively. An electric telescopic rod A is fixedly connected to the bottom of the mounting plate. An L-shaped connecting rod is fixedly connected to the output end of the electric telescopic rod A. A ring is fixedly connected to one end of the L-shaped connecting rod. The ring is rotatably connected to the active friction wheel via a bearing. The other end of the L-shaped connecting rod is used as a stop to prevent the rotating cylinder and rotating rod from rotating.

[0007] Preferably, the blocking component includes a connecting plate, which is fixedly connected to the other end of an L-shaped connecting rod. The outer wall of the connecting plate has two guide grooves, and the inner wall of the guide groove is slidably connected to a sliding shaft A. One end of the sliding shaft A is fixedly connected to a sliding rod, and the other end of the sliding rod is fixedly connected to a blocking block.

[0008] Preferably, the stopping component further includes a limiting plate, which is fixedly connected to the upper end of the mounting plate, and the sliding rod slides through the limiting plate.

[0009] Preferably, a transmission bar is fixedly connected to the outer wall of the transmission shaft, and a groove is provided on the inner wall of the active friction wheel, with the transmission bar slidably connected to the groove.

[0010] Preferably, the side of the stop block closest to the rotating drum and the rotating rod is set with an arc surface that matches them, and the arc surface is provided with friction texture.

[0011] Preferably, the adjustment assembly includes a movable shaft, a receiving groove is provided on the lower side of the mounting shaft, the movable shaft is rotatably connected to the inner wall of the receiving groove, a movable block is fixedly sleeved on the outer wall of the movable shaft, the bottom of the movable block is fixedly connected to the top of the lighting body, a linkage rod is fixedly connected to the back of the movable block, a sliding shaft B is fixedly connected to the other end of the linkage rod, an electric telescopic rod B is fixedly connected to the bottom of the mounting rod, an arc-shaped plate is fixedly connected to the output end of the electric telescopic rod B, and an arc-shaped groove is provided on the inner side of the arc-shaped plate.

[0012] Preferably, one end of the sliding shaft B extends into the arc-shaped groove and is slidably connected to the arc-shaped groove.

[0013] Preferably, the upper end of the base is equipped with a lifting assembly, which includes two vertical plates. The two vertical plates are fixedly connected to the upper end of the base. An adjusting rod is rotatably connected between the two vertical plates via a pin. One end of the adjusting rod is hinged to the moving column, and the other end of the adjusting rod is fixedly connected to a fixing rod. A pedal is fixedly connected to the bottom end of the fixing rod. The outer wall of the moving column has several positioning holes A, and the outer wall of the fixing column has a positioning hole B. Positioning rods are inserted into the positioning holes A and B.

[0014] Preferably, the diameters of positioning hole A and positioning hole B are the same, and the diameter of the positioning rod matches the diameters of positioning hole A and positioning hole B.

[0015] Preferably, the side of the fixed column is provided with a through groove, and one end of the adjusting rod is movably connected inside the through groove.

[0016] The advantages of this application are: (1) This application achieves step-by-step adjustment of the orientation and left and right angle of the lighting lamp by alternating engagement of the active friction wheel driven by the motor with different driven friction wheels. The cooperation of the stop and the friction texture ensures that the rotating part on one side is fixed and the transmission on the other side is precise during the adjustment process, avoiding angle deviation. The linkage design of the transmission bar and the slot ensures the reliability of power transmission, so that the lighting lamp always faces forward when the orientation is adjusted, which meets the needs of the stability of the illumination direction and multi-angle coverage in oral and otolaryngological examinations. (2) This application adds a pitch adjustment component, which pushes the arc plate through the electric telescopic rod, and uses the arc groove to guide the sliding shaft to drive the linkage rod and the movable block to rotate around the axis, so as to achieve smooth and precise adjustment of the pitch angle of the lighting lamp. The arc groove trajectory design ensures the continuity and stability of the movement process and effectively avoids jamming. This structure allows the lighting lamp to be flexibly adjusted in three-dimensional space with multiple degrees of freedom, further improving the illumination adaptability to complex examination sites. (3) This application realizes the height adjustment function of the lighting device by setting up a lifting component, which is particularly suitable for doctors to use in different examination scenarios. The foot-operated adjustment not only allows operators to quickly and conveniently adjust the height of the lighting without manual adjustment, but also effectively reduces the workload for doctors during consultations. Combined with the positioning rod design, the height of the lighting device can be stably locked, ensuring that the height does not shift during prolonged use, improving work efficiency and providing continuous and reliable lighting support. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the rear structure of the present invention; Figure 3 This is the invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is the invention Figure 1 Enlarged structural diagram at point B; Figure 5 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 6 This is the invention Figure 2 Enlarged structural diagram at point C; Figure 7 This is the invention Figure 1 Enlarged structural diagram at point D.

[0018] In the above image, 1. Base; 2. Fixed column; 3. Moving column; 41. Rotating cylinder; 42. Mounting rod; 43. Fixed cylinder; 44. Rotating rod; 45. Connecting block A; 46. Connecting rod; 47. Connecting block B; 48. Mounting shaft; 49. Motor; 410. Transmission shaft; 411. Driving friction wheel; 412. Transmission bar; 413. Slot; 414. Driven friction wheel A; 415. Driven friction wheel B; 416. Electric telescopic rod A; 417. L-shaped connecting rod; 418. Ring; 419. Connecting rod 420. Connecting plate; 421. Guide groove; 422. Sliding shaft A; 423. Sliding rod; 424. Stop block; 425. Limiting plate; 5. Adjusting assembly; 51. Movable shaft; 52. Movable block; 53. Linkage rod; 54. Sliding shaft B; 55. Electric telescopic rod B; 56. Arc plate; 57. Arc groove; 6. Lifting assembly; 61. Vertical plate; 62. Adjusting rod; 63. Fixing rod; 64. Pedal; 65. Positioning hole A; 66. Positioning rod; 67. Through groove; 7. Lighting lamp body; 8. Mounting plate. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1, please refer to Figures 1-7 This embodiment provides a lighting device for oral and otolaryngological biomedical examinations, including: a base 1; a fixed column 2, which is fixedly connected to the upper end of the base 1; a movable column 3, which is slidably connected to the outer wall of the fixed column 2; and a mounting plate 8, which is fixedly connected to the top of the movable column 3. A rotating cylinder 41 and a rotating rod 44 are rotatably connected to the top of the mounting plate 8. A mounting rod 42 is fixedly connected to the outer wall of the rotating cylinder 41. A fixed cylinder 43 is fixedly connected to the other end of the mounting rod 42. A connecting block A45 is fixedly connected to the upper end of the rotating rod 44. A connecting rod 46 is rotatably connected to the upper end of the connecting block A45 via a pin. A connecting block B47 is rotatably connected to the other end of the connecting rod 46 via a pin. A mounting shaft 48 is rotatably connected to the bottom of the connecting block B47. An adjusting component 5 is provided at the bottom of the mounting shaft 48. A lighting lamp body 7 is mounted on the mounting shaft 48 via the adjusting component 5. A motor 49 is fixedly connected to the bottom of the mounting plate 8. The output shaft of 9 is fixedly connected to a drive shaft 410. The outer wall of the drive shaft 410 is movably fitted with an active friction wheel 411. The outer walls of the rotating drum 41 and the rotating rod 44 are respectively fixedly fitted with driven friction wheels A414 and B415. The bottom of the mounting plate 8 is fixedly connected to an electric telescopic rod A416. The output end of the electric telescopic rod A416 is fixedly connected to an L-shaped connecting rod 417. One end of the L-shaped connecting rod 417 is fixedly connected to a ring 418. The ring 418 is rotatably connected to the active friction wheel 411 through a bearing. The other end of the L-shaped connecting rod 417 is used as a stop to prevent the rotating drum 41 and the rotating rod 44 from rotating.

[0026] The blocking component includes a connecting plate 419, which is fixedly connected to the other end of an L-shaped connecting rod 417. The outer wall of the connecting plate 419 has two guide grooves 420. The inner wall of the guide grooves 420 is slidably connected to a sliding shaft A421. One end of the sliding shaft A421 is fixedly connected to a sliding rod 422, and the other end of the sliding rod 422 is fixedly connected to a blocking block 423.

[0027] The stopping component also includes a limiting plate 424, which is fixedly connected to the upper end of the mounting plate 8. The sliding rod 422 slides through the limiting plate 424. When the sliding rod 422 slides through the limiting plate 424, it can maintain a relatively precise movement trajectory, thereby making the related operations or the coordination of components more precise.

[0028] A transmission bar 412 is fixedly connected to the outer wall of the drive shaft 410, and a groove 413 is provided on the inner wall of the driving friction wheel 411. The transmission bar 412 is slidably connected to the groove 413. The transmission bar 412 is provided on the outer wall of the drive shaft 410, and the two are fixedly connected. This connection method ensures that the transmission bar 412 and the drive shaft 410 can move synchronously and will not have relative displacement. At the same time, a groove 413 is specially provided on the inner wall of the driving friction wheel 411. This groove 413 is designed with a specific shape and size to form a mating relationship with the transmission bar 412.

[0029] The stop block 423 has a matching arc surface on the side near the rotating drum 41 and the rotating rod 44, and the arc surface is provided with friction texture. The arc surface design allows for a closer contact between the two, and the friction texture on these arc surfaces provides additional friction during actual use, thereby effectively improving the cooperation between the stop block 423 and the rotating drum 41 and the rotating rod 44, ensuring that the entire device operates more stably and efficiently.

[0030] When in use, if it is necessary to change the orientation of the lighting body 7, first start the motor 49 to drive the drive shaft 410 to rotate. The drive shaft 410 drives the active friction wheel 411 to rotate synchronously through the cooperation of the drive bar 412 and the slot 413. At this time, the active friction wheel 411 contacts the driven friction wheel A414. Under the action of friction, the driven friction wheel A414 will rotate accordingly, which will cause the inner rotating cylinder 41 to rotate accordingly. Then the mounting rod 42 on the outer wall of the rotating cylinder 41 will drive the fixed cylinder 43 to rotate synchronously. During the rotation of the fixed cylinder 43, the position of the mounting shaft 48 will also rotate around the rotating cylinder 41, thereby adjusting the orientation of the lighting body 7. Since the rotating rod 44 is fixed at this time, while the mounting shaft 48 revolves with the fixed cylinder 43, the connecting block B47 will drive the connecting block A45 to rotate synchronously around the axis of the rotating rod 44 through the connecting rod 46. This ensures that the mounting shaft 48 maintains a relatively stable posture during the revolution, preventing unnecessary angular deviations in the lighting body 7 when adjusting its position. This ensures that the lighting body 7 always faces forward, regardless of its orientation. If it is necessary to change the left and right angle of the lighting body 7, after the orientation is adjusted to the correct position, the electric telescopic rod A416 can be activated, causing its output end to drive the L-shaped connecting rod 417 to move. The L-shaped connecting rod 417 will drive the ring 418 to move, thereby pushing the active friction wheel 411 to slide along the axial direction of the transmission shaft 410, so that the active friction wheel 411 separates from the driven friction wheel A414 and contacts the driven friction wheel B415. At the same time, the connecting plate 419 at the other end of the L-shaped connecting rod 417 moves with it. The guide groove 420 on the connecting plate 419 will drive the sliding rod 422 to slide within the limiting plate 424 through the sliding shaft A421, so that the blocking block 423, which was originally in contact with the rotating rod 44, disengages from the rotating rod 44. The blocking block 423, which was originally separated from the rotating cylinder 41, will contact the rotating cylinder 41 under the push of the sliding rod 422, using the friction texture on the arc surface to increase the friction force, thereby fixing the rotating cylinder 41. At this time, the active friction wheel 411 drives the driven friction wheel B415 to rotate, and the driven friction wheel B415 drives the rotating rod 44 to rotate. The rotating rod 44 drives the mounting shaft 48 to rotate around the rotating rod 44 as the axis through the connecting block A45, the connecting rod 46, and the connecting block B47, thereby realizing the adjustment of the left and right angle of the lighting body 7. During the adjustment process, the limiting plate 424 guides and limits the sliding rod 422, ensuring that the stopping block 423 can accurately contact or separate from the rotating cylinder 41 or the rotating rod 44, ensuring the stability and reliability of the adjustment process. Example 2, please refer to Figures 1-7 Based on embodiment 1, the adjustment component 5 includes a movable shaft 51, a receiving groove is provided on the lower side of the mounting shaft 48, the movable shaft 51 is rotatably connected to the inner wall of the receiving groove, a movable block 52 is fixedly sleeved on the outer wall of the movable shaft 51, the bottom of the movable block 52 is fixedly connected to the top of the lighting body 7, a linkage rod 53 is fixedly connected to the back of the movable block 52, a sliding shaft B54 is fixedly connected to the other end of the linkage rod 53, an electric telescopic rod B55 is fixedly connected to the bottom of the mounting rod 42, an arc plate 56 is fixedly connected to the output end of the electric telescopic rod B55, and an arc groove 57 is provided on the inner side of the arc plate 56.

[0031] One end of the sliding shaft B54 extends to the arc-shaped groove 57 and is slidably connected to the arc-shaped groove 57. This sliding connection design allows the sliding shaft B54 to slide freely within the arc-shaped groove 57, while ensuring a tight fit between the two and preventing loosening or separation.

[0032] In use, when it is necessary to adjust the pitch angle of the lighting body 7, the electric telescopic rod B55 is activated. Its output end pushes the arc plate 56 to move. The arc groove 57 on the inner side of the arc plate 56 guides the sliding shaft B54, causing the sliding shaft B54 to slide along the trajectory of the arc groove 57. The sliding shaft B54 drives the linkage rod 53 to move, which in turn pushes the movable block 52 to rotate around the movable shaft 51. The lighting body 7 at the bottom of the movable block 52 rotates synchronously, thereby achieving precise adjustment of its pitch angle. Since the movable shaft 51 is rotatably connected in the receiving groove on the lower side of the mounting shaft 48, it provides stable support for the rotation of the movable block 52. The arc design of the arc groove 57 ensures the smoothness of the movement trajectory of the lighting body 7 during adjustment, avoiding any jamming or jumping phenomenon during angle adjustment.

[0033] Example 3, please refer to Figures 1-7Based on embodiment 1, a lifting assembly 6 is assembled on the upper end of the base 1. The lifting assembly 6 includes two vertical plates 61, which are fixedly connected to the upper end of the base 1. An adjusting rod 62 is rotatably connected between the two vertical plates 61 through a pin. One end of the adjusting rod 62 is hinged to the moving column 3, and the other end of the adjusting rod 62 is fixedly connected to a fixing rod 63. A pedal 64 is fixedly connected to the bottom end of the fixing rod 63. Several positioning holes A65 are opened on the outer wall of the moving column 3, and a positioning hole B is opened on the outer wall of the fixing column 2. Positioning rods 66 are inserted into the positioning holes A65 and B.

[0034] The positioning hole A65 has the same diameter as the positioning hole B, and the diameter of the positioning rod 66 matches the diameters of the positioning holes A65 and B. This ensures that the positioning rod 66 can be smoothly and accurately inserted into the two positioning holes during assembly or use, achieving a tight fit and stable connection.

[0035] The side of the fixed column 2 is provided with a through groove 67, and one end of the adjusting rod 62 is movably connected inside the through groove 67, thereby realizing the flexible connection between the adjusting rod 62 and the fixed column 2. This design not only ensures that the adjusting rod 62 can move freely or adjust its position in the through groove 67, but also ensures the stability and functionality of the entire structure, providing a reliable guarantee for subsequent operation and use.

[0036] In use, when the height of the lighting body 7 needs to be adjusted, the operator can step on the pedal 64 to cause the fixing rod 63 to drive the adjusting rod 62 to rotate around the pin between the two vertical plates 61. One end of the adjusting rod 62 moves in the through groove 67 and pushes the moving column 3 to slide up and down along the outer wall of the fixing column cylinder 2, thereby changing the height of the mounting plate 8 and the lighting body 7. Since the height of the lighting body 7 may need to be adjusted frequently during doctor consultations, the foot pedal adjustment method is more convenient and labor-saving than the traditional manual adjustment, which can effectively reduce the doctor's operational burden during the examination process and improve work efficiency. When the height needs to be maintained at a certain height for a long time, after adjusting to the appropriate position, the positioning rod 66 can be inserted into the positioning hole A65 and positioning hole B of the corresponding height. The positioning rod 66 is used to fix the relative position of the moving column 3 and the fixing column cylinder 2, preventing the height from shifting due to external force or the weight of the device itself during use, ensuring that the lighting device always maintains a stable height during the examination, and providing continuous and reliable lighting support for the doctor's examination work.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A lighting device for oral and otolaryngological biomedical examinations, characterized in that, include: Base; A fixed column is fixedly connected to the upper end of the base; A movable column, which is slidably connected to the outer wall of a fixed column cylinder; Mounting plate, which is fixedly connected to the top of the movable column; The top of the mounting plate is rotatably connected to a rotating cylinder and a rotating rod. An installation rod is fixedly connected to the outer wall of the rotating cylinder. A fixed cylinder is fixedly connected to the other end of the installation rod. A connecting block A is fixedly connected to the upper end of the rotating rod. A connecting rod is rotatably connected to the upper end of connecting block A via a pin. A connecting block B is rotatably connected to the other end of the connecting rod via a pin. An installation shaft is rotatably connected to the bottom of connecting block B. An adjustment assembly is provided at the bottom of the installation shaft. A lighting lamp body is mounted on the installation shaft via the adjustment assembly. A motor is fixedly connected to the bottom of the mounting plate. A transmission shaft is fixedly connected to the output shaft of the motor. An active friction wheel is movably sleeved on the outer wall of the transmission shaft. Driven friction wheels A and B are fixedly sleeved on the outer walls of the rotating cylinder and the rotating rod, respectively. An electric telescopic rod A is fixedly connected to the bottom of the mounting plate. An L-shaped connecting rod is fixedly connected to the output end of the electric telescopic rod A. A ring is fixedly connected to one end of the L-shaped connecting rod. The ring is rotatably connected to the active friction wheel via a bearing. The other end of the L-shaped connecting rod is used as a stop to prevent the rotating cylinder and rotating rod from rotating.

2. The lighting device for oral and otolaryngological biomedical examinations according to claim 1, characterized in that, The blocking component includes a connecting plate, which is fixedly connected to the other end of an L-shaped connecting rod. Two guide grooves are formed on the outer wall of the connecting plate, and a sliding shaft A is slidably connected to the inner wall of the guide groove. A sliding rod is fixedly connected to one end of the sliding shaft A, and a blocking block is fixedly connected to the other end of the sliding rod.

3. The lighting device for oral and otolaryngological biomedical examinations according to claim 2, characterized in that, The stopping component also includes a limiting plate, which is fixedly connected to the upper end of the mounting plate, and the sliding rod slides through the limiting plate.

4. The lighting device for oral and otolaryngological biomedical examinations according to claim 1, characterized in that, A transmission bar is fixedly connected to the outer wall of the transmission shaft, and a groove is provided on the inner wall of the active friction wheel. The transmission bar is slidably connected to the groove.

5. The lighting device for oral and otolaryngological biomedical examinations according to claim 1, characterized in that, The side of the stop block closest to the rotating drum and the rotating rod is set with an arc surface that matches them, and the arc surface is provided with friction texture.

6. The lighting device for oral and otolaryngological biomedical examinations according to claim 1, characterized in that, The adjustment assembly includes a movable shaft. A receiving groove is provided on the lower side of the mounting shaft. The movable shaft is rotatably connected to the inner wall of the receiving groove. A movable block is fixedly sleeved on the outer wall of the movable shaft. The bottom of the movable block is fixedly connected to the top of the lighting body. A linkage rod is fixedly connected to the back of the movable block. A sliding shaft B is fixedly connected to the other end of the linkage rod. An electric telescopic rod B is fixedly connected to the bottom of the mounting rod. An arc-shaped plate is fixedly connected to the output end of the electric telescopic rod B. An arc-shaped groove is provided on the inner side of the arc-shaped plate.

7. The lighting device for oral and otolaryngological biomedical examinations according to claim 6, characterized in that, One end of the sliding shaft B extends into the arc-shaped groove and is slidably connected to the arc-shaped groove.

8. The lighting device for oral and otolaryngological biomedical examinations according to claim 7, characterized in that, The upper end of the base is equipped with a lifting assembly, which includes two vertical plates. The two vertical plates are fixedly connected to the upper end of the base. An adjusting rod is rotatably connected between the two vertical plates via a pin. One end of the adjusting rod is hinged to the moving column, and the other end of the adjusting rod is fixedly connected to a fixing rod. A pedal is fixedly connected to the bottom end of the fixing rod. The outer wall of the moving column has several positioning holes A, and the outer wall of the fixing column has a positioning hole B. Positioning rods are inserted into the positioning holes A and B.

9. The lighting device for oral and otolaryngological biomedical examinations according to claim 8, characterized in that, The diameters of positioning holes A and B are the same, and the diameter of the positioning rod matches the diameters of positioning holes A and B.

10. The lighting device for oral and otolaryngological biomedical examinations according to claim 9, characterized in that, The side of the fixed column is provided with a through groove, and one end of the adjusting rod is movably connected inside the through groove.

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