A new type of surgical shadowless lamp

Abstract

The present invention provides a novel surgical shadowless lamp, which relates to the technical field of medical devices. The novel surgical shadowless lamp comprises a lamp holder, a light source group and a lens group, wherein the light source group comprises a low beam lamp group, a high beam lamp group, a first fill light lamp group and a second fill light lamp group uniformly distributed on the lamp holder, and the lens group comprises a first lens, a second lens and a Fresnel lens, and by allowing the low beam lamp group to adopt a first lens with a larger distribution curvature, the light can be focused at a closer position, which is suitable for illuminating the body tissue in the shallow area, while the high beam lamp group adopts a second lens with a smaller distribution curvature, which can focus the light at a farther position, providing illumination for the body tissue in the deep area, and at the same time, the first fill light lamp group and the second fill light lamp group both adopt Fresnel lenses, which can disperse the light more evenly and irradiate farther, effectively meeting the lighting requirements of different surgical scenes.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a novel surgical shadowless lamp. Background Art

[0002] As a key equipment specially used for operating room lighting, surgical shadowless lamp plays a vital role in surgical operations. Its main purpose is to create extremely good lighting conditions for surgical operations so that doctors can perform surgical operations accurately. Surgical shadowless lamps must provide sufficiently bright and stable light so that doctors can clearly observe the fine structures of the surgical site, such as extremely small blood vessels, nerves and other tissues. During the operation, minimizing the generation of shadows is crucial for the doctor's operation, especially during delicate operations. Even extremely small shadows may interfere with the doctor's accurate judgment of the positional relationship between surgical instruments and tissues, thereby affecting the smooth progress of the operation and the final effect.

[0003] For different types of surgical scenes, the lighting requirements of surgical shadowless lamps are also significantly different. For example, when performing deep surgery, the shadowless lamp needs to focus the light highly and accurately guide it to the deep surgical area to ensure that enough light can reach the deepest part of the surgical site smoothly and provide doctors with a clear field of vision. When performing shallow surgery or large-area surgery, the shadowless lamp is required to scatter the light evenly on the surface of a larger surgical area to avoid local over-brightness or over-darkness to ensure uniform lighting of the entire surgical area. However, in actual applications, existing shadowless lamps often have the problem of a single lighting mode, which makes it difficult to meet the diverse needs of different surgical scenes. This not only brings certain troubles to doctors' surgical operations, but also affects the quality and efficiency of the surgery to a certain extent.

[0004] Therefore, we have developed a new type of surgical shadowless lamp. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a novel surgical shadowless lamp, which solves the problem that the existing surgical shadowless lamp has a single lighting mode and is difficult to meet the needs of different surgical scenes.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a novel surgical shadowless lamp, comprising a bracket, one end of which is rotatably matched with a lamp body, the lamp body comprising a lamp holder, a light source group and a lens group, the light source group comprising a low beam light group, a high beam light group, a first fill light group and a second fill light group;

[0009] The low beam light group includes a plurality of low beam light sources rotatably matched on the outer ring of the lamp holder in a circular array, the first fill-in light group includes a plurality of first fill-in light sources rotatably matched on the inner ring of the lamp holder in a circular array, the high beam light group includes a plurality of groups of high beam light sources rotatably matched on the lamp holder and located between the low beam light group and the first fill-in light group, the second fill-in light group includes a plurality of groups of second fill-in light sources rotatably matched on the lamp holder and located between the low beam light group and the first fill-in light group, each group of the second fill-in light sources is located between two adjacent groups of the high beam light sources;

[0010] The lens group includes a first lens, a second lens and a Fresnel lens. The distribution curvature of the first lens is greater than that of the second lens. The outer curved surface of the Fresnel lens is annularly sawtoothed. The low beam light source adopts the first lens, the high beam light source adopts the second lens, and the first fill light source and the second fill light source both adopt Fresnel lenses.

[0011] Preferably, the low beam light source, high beam light source, first fill light source and second fill light source all include a frame body, the frame body includes a base plate, and two symmetrical rotating shafts are fixedly connected to the peripheral side surface of the base plate, and the rotating shafts are rotatably matched with the lamp holder.

[0012] Preferably, a connecting ring is fixedly connected to one side of the base plate, a light source is fixedly installed in the connecting ring on one side of the base plate, a shell is threadedly connected to the outer peripheral side of the connecting ring, and a retaining ring is snap-fitted to the inner peripheral side of the shell.

[0013] Preferably, the housing in the low beam light source is snap-fitted with the first lens, the housing in the high beam light source is snap-fitted with the second lens, and the housings in the first fill light source and the second fill light source are both snap-fitted with the Fresnel lens.

[0014] Preferably, a sleeve is fixedly connected to the other side of the base plate, a T-shaped rod is slidably fitted in the sleeve, and a connecting ball is fixedly connected to one end of the T-shaped rod.

[0015] Preferably, a back cover is fixedly mounted on one side of the lamp holder, a first circular ring is rotatably fitted inside the back cover, a plurality of first arc-shaped grooves are provided on one side of the first circular ring in a circular array, a connecting ball in the first fill light source is slidably fitted with the first arc-shaped groove, and a first shift plate is fixedly connected to one side of the first circular ring and slidably fits with the back cover.

[0016] Preferably, a second circular ring is rotatably engaged in the back cover, a plurality of second arc-shaped grooves are provided in a circular array on one side of the second circular ring, a connecting ball in the second fill light source is slidably engaged with the second arc-shaped groove, and a second shift plate slidably engaged with the back cover is fixedly connected to one side of the second circular ring.

[0017] Preferably, a third circular ring is rotatably engaged in the rear cover, a plurality of third arc-shaped grooves are provided in a circular array on one side of the third circular ring, the connecting ball in the high beam light source is slidably engaged with the third arc-shaped groove, and a third shift plate slidably engaged with the rear cover is fixedly connected to one side of the third circular ring.

[0018] Preferably, a fourth circular ring is rotatably engaged in the rear cover, a plurality of fourth arc-shaped grooves are provided in a circular array on one side of the fourth circular ring, the connecting ball in the low beam light source is slidably engaged with the fourth arc-shaped groove, and a fourth shift plate slidably engaged with the rear cover is fixedly connected to the circumferential side of the fourth circular ring.

[0019] Preferably, a connecting plate is slidably fitted between two adjacent T-shaped rods in the high beam lamp group and the second fill light lamp group, and two symmetrical through grooves are penetrated through one side of the connecting plate, and the two through grooves are slidably fitted with the two T-shaped rods respectively, and a handle is fixedly connected to the center of the lamp holder.

[0020] Through the above technical solution, different lamp groups can be used to meet different surgical lighting needs.

[0021] (III) Beneficial effects

[0022] The present invention provides a novel surgical shadowless lamp, which has the following beneficial effects:

[0023] 1. The new surgical shadowless lamp evenly distributes a low beam lamp group, a high beam lamp group, a first fill light lamp group and a second fill light lamp group on the lamp holder, and the low beam lamp group and the high beam lamp group adopt a first lens and a second lens respectively, wherein the distribution curvature of the first lens is greater than that of the second lens, and the first lens allows the light to focus at a closer position, so the low beam lamp group is suitable for providing illumination for body tissues in shallow areas, while the second lens allows the light to focus at a farther position, so that the high beam lamp group can illuminate body tissues in deep areas. At the same time, both the first fill light lamp group and the second fill light lamp group adopt Fresnel lenses, which can redistribute light, so that the light is more evenly dispersed within the illumination range of the surgical shadowless lamp and the light is irradiated farther, which can achieve a good fill light effect and provide strong guarantee for the lighting needs in different surgical scenes.

[0024] 2. This new type of surgical shadowless lamp is equipped with corresponding rings and dials for each lamp group, so that the irradiation direction of the light source in each lamp group can be adjusted by turning the dial, so that the light emitted by the light source is evenly irradiated on the operating area, and when multiple lamp groups are used at the same time, it is avoided that the light emitted by each lamp group is easily crossed, thereby causing mutual interference between the lights and affecting the lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 A three-dimensional diagram of the lamp body;

[0027] Figure 3 It is a schematic diagram of the structure of the lamp holder and the light source group;

[0028] Figure 4 is a side view of the lens assembly;

[0029] Figure 5 is a cross-sectional view of a low beam lamp source;

[0030] Figure 6 is a cross-sectional view of a high beam lamp source;

[0031] Figure 7 A cross-sectional view of the first fill light source or the second fill light source;

[0032] Figure 8 It is a three-dimensional diagram of the lamp holder, the light source group and each ring;

[0033] Fig. 9 A rear perspective view of the lamp holder and the light source assembly;

[0034] Fig.10 A front view of each ring.

[0035] Among them, 1. bracket; 2. lamp body; 3. lamp holder; 4. light source group; 5. low beam group; 6. high beam group; 7. first fill light group; 8. second fill light group; 9. low beam source; 10. first fill light source; 11. high beam source; 12. second fill light source; 13. lens group; 14. first lens; 15. second lens; 16. Fresnel lens; 17. frame body; 18. bottom plate; 19. shaft; 20. connecting ring; 21. shell; 22. , retaining ring; 23, sleeve; 24, T-shaped rod; 25, connecting ball; 26, back cover; 27, first circular ring; 28, first arc-shaped slide groove; 29, second circular ring; 30, second arc-shaped slide groove; 31, third circular ring; 32, third arc-shaped slide groove; 33, fourth circular ring; 34, fourth arc-shaped slide groove; 35, connecting plate; 36, first dial plate; 37, second dial plate; 38, third dial plate; 39, fourth dial plate; 40, through groove; 41, handle; 42, light source. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Examples, such as Figure 1 - Fig.10 As shown, an embodiment of the present invention provides a new type of surgical shadowless lamp, including a bracket 1, one end of which is rotatably engaged with a lamp body 2, the lamp body 2 includes a lamp holder 3, a light source group 4 and a lens group 13, and a handle 41 is fixedly connected to the center of the lamp holder 3. The position of the lamp body 2 can be adjusted by pulling down the handle 41 and cooperating with the movable bracket 1 to meet the lighting requirements of different surgical sites.

[0038] The light source group 4 includes a low beam group 5, a high beam group 6, a first fill light group 7 and a second fill light group 8. In deep surgery, the high beam group 6 is used to focus and guide the light to the deep area of ​​the surgery. In shallow surgery or large-area surgery, the low beam group 5 is used to evenly scatter the light on the surface of a larger surgical area to avoid local overbrightness or overdarkness. At the same time, the first fill light group 7 and the second fill light group 8 are used to provide fill light to meet lighting needs.

[0039] Specifically, the low beam light group 5 includes a plurality of low beam light sources 9 rotatably engaged in a circular array on the outer ring of the lamp holder 3, the first fill light group 7 includes a plurality of first fill light sources 10 rotatably engaged in a circular array on the inner ring of the lamp holder 3, the high beam light group 6 includes a plurality of high beam light sources 11 rotatably engaged in a circular array on the lamp holder 3 and located between the low beam light group 5 and the first fill light group 7, the second fill light group 8 includes a plurality of second fill light sources 12 rotatably engaged in a circular array on the lamp holder 3 and located between the low beam light group 5 and the first fill light group 7, each group of second fill light sources 12 is located between two adjacent groups of high beam light sources 11, thereby evenly distributing different light groups on the lamp holder 3 so that each light group can provide good lighting.

[0040] The lens group 13 includes a first lens 14, a second lens 15 and a Fresnel lens 16. The distribution curvature of the first lens 14 is greater than that of the second lens 15. For different lenses, the greater the distribution curvature, the greater the curvature of the lens surface, the stronger the light convergence ability, the closer the light focus point, and it is suitable for lighting the shallow area of ​​the body. The lens with a smaller curvature will make the light focus point farther. Although the light convergence effect is relatively weak, it can be used with the first fill light group 7 and the second fill light group 8 for fill light, so as to illuminate the deep area of ​​the body. Fresnel The outer curved surface of the Fresnel lens 16 is annularly serrated. The Fresnel lens 16 is made by making the curved part of the lens surface into a series of concentric annular serrated structures, so that it can redistribute the light emitted by the light source 42, so that the light is more evenly dispersed within the illumination range of the surgical shadowless lamp, and the light is irradiated farther, reducing the shadow caused by uneven illumination, and can achieve a good fill light effect. The low beam source 9 adopts the first lens 14, the high beam source 11 adopts the second lens 15, and the first fill light source 10 and the second fill light source 12 both adopt the Fresnel lens 16.

[0041] The low beam light source 9, the high beam light source 11, the first fill light source 10 and the second fill light source 12 all include a frame body 17, the frame body 17 includes a base plate 18, and two symmetrical rotating shafts 19 are fixedly connected to the side surfaces of the base plate 18. The rotating shafts 19 are rotatably matched with the lamp holder 3, which allows the light source to rotate relative to the lamp holder 3, thereby adjusting the illumination direction of the light source.

[0042] A connecting ring 20 is fixedly connected to one side of the base plate 18, and a light source 42 is fixedly installed in the connecting ring 20 on one side of the base plate 18. A shell 21 is threadedly connected to the outer peripheral side of the connecting ring 20. When the light source is inspected, the shell 21 is detached from the connecting ring 20 by rotating the shell 21, so that the shell 21 can be removed from the base plate 18, thereby inspecting the light source 42 on the base plate 18 and the lens on the shell 21.

[0043] A retaining ring 22 is snap-fitted on the inner side of the shell 21, and the retaining ring 22 should be made of elastic material. The shell 21 in the low beam light source 9 is snap-fitted with the first lens 14, the shell 21 in the high beam light source 11 is snap-fitted with the second lens 15, and the shells 21 in the first fill light source 10 and the second fill light source 12 are snap-fitted with the Fresnel lens 16. The lens is snap-fitted in the groove on the inner side of the shell 21 and is located on one side of the retaining ring 22. Therefore, when disassembling the lens, you only need to remove the shell 21 from the bottom plate 18, and then press the lens to remove the lens together with the retaining ring 22 from the shell 21.

[0044] A sleeve 23 is fixedly connected to the other side of the bottom plate 18, a T-shaped rod 24 is slidably fitted in the sleeve 23, a connecting ball 25 is fixedly connected to one end of the T-shaped rod 24, a back cover 26 is fixedly installed on one side of the lamp holder 3, a first ring 27 is rotatably fitted in the back cover 26, a first arc-shaped slide groove 28 is provided on one side of the first ring 27 in a circumferential array, the connecting ball 25 in the first fill light source 10 is slidably fitted with the first arc-shaped slide groove 28, a first dial plate 36 slidably fitted with the back cover 26 is fixedly connected to one side of the first ring 27, a second ring 29 is rotatably fitted in the back cover 26, a first ring 29 is provided on one side in a circumferential array The second arc-shaped slide groove 30 is slidably matched with the connecting ball 25 in the second fill light source 12. A second dial plate 37 slidably matched with the rear cover 26 is fixedly connected to one side of the second ring 29. A third ring 31 is rotatably matched in the rear cover 26. A plurality of third arc-shaped slide grooves 32 are provided in a circular array on one side of the third ring 31. The connecting ball 25 in the high beam light source 11 is slidably matched with the third arc-shaped slide groove 32. A third dial plate 38 slidably matched with the rear cover 26 is fixedly connected to one side of the third ring 31. A fourth ring 33 is rotatably matched in the rear cover 26. A plurality of fourth arc-shaped slide grooves 32 are provided in a circular array on one side of the fourth ring 33. shaped slot 34, the connecting ball 25 in the low beam light source 9 is slidably matched with the fourth arc slot 34, the fourth circular ring 33 is fixedly connected to the side surface thereof with a fourth dial plate 39 slidably matched with the rear cover 26, and the two adjacent T-shaped rods 24 in the high beam light group 6 and the second fill light group 8 are slidably matched with a connecting plate 35, and two symmetrical through grooves 40 are penetrated through one side of the connecting plate 35, and the two through grooves 40 are respectively slidably matched with the two T-shaped rods 24, and the first circular ring 27 can be rotated relative to the rear cover 26 by dialing the part of the first dial plate 36 exposed outside the rear cover 26, and at the same time, the connecting ball 25 will slide in the first arc slot 28, so that the T-shaped rod 2 4 swings, the T-shaped rod 24 drives the sleeve 23 to swing, and the sleeve 23 drives the bottom plate 18 to rotate around the axis of the two rotating shafts 19, so that the light source 42 and the Fresnel lens 16 rotate synchronously, so as to adjust the irradiation direction of the first fill light source 10, so that the light irradiated by the first fill light group 7 converges inward or expands outward. Similarly, the irradiation direction of the corresponding light source is adjusted by turning the dials on different rings. When multiple light groups are used at the same time, the light emitted by each light group is prone to cross, thereby causing mutual interference between the light and affecting the lighting effect. At this time, the irradiation direction of the light source can be adjusted to avoid such interference.

[0045] Working principle: Through the design of four types of lamp groups, multiple modes can be formed to suit different surgical scenarios, that is, in large-area surgical scenarios, such as large abdominal surgery or large-area burn debridement surgery, the low-beam lamp group 5 can be started, wherein the first lens 14 used in the low-beam lamp source 9 has a larger distribution curvature, and the light convergence ability is stronger, and the light focus point is closer, which can better illuminate the body tissue in the shallow area. At the same time, by turning the fourth dial plate 39, the fourth ring 33 rotates relative to the rear cover 26, and the connecting ball 25 slides in the fourth arc-shaped slide groove 34, so that the T-shaped rod 24 swings, and the T-shaped rod 24 drives the sleeve 23 to swing, and the sleeve 23 drives the entire low-beam lamp source 9 to rotate around the axis of the two rotating shafts 19, so as to adjust the irradiation direction of the low-beam lamp source 9, so that the light is more evenly scattered on the surface of a larger surgical area;

[0046] When performing deep surgery, such as deep brain surgery in neurosurgery or spinal surgery in orthopedics, the second lens 15 used in the high-beam light source 11 has a smaller distribution curvature, so that the light focus point is farther away, and the deep area of ​​the body can be illuminated. If the lighting effect of the low-beam light group 5 is insufficient, the first fill light group 7 and the second fill light group 8 can be used to fill light, so as to improve the lighting effect, and the irradiation directions of the first fill light group 7, the second fill light group 8 and the high-beam light source 11 are adjusted by sequentially turning the first dial plate 36, the second dial plate 37 and the third dial plate 38, so that the light irradiation is more uniform and the interference between the light emitted by each light group is avoided;

[0047] When performing complex neurosurgery or delicate ENT surgery, it is necessary to observe both the deep areas of the body and a larger range of surrounding body tissues. The low beam group 5, the high beam group 6, the first fill light group 7 and the second fill light group 8 can be turned on at the same time to meet the lighting needs of both the deep area and the shallow area.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel surgical shadowless lamp, comprising a bracket (1), one end of which is rotatably engaged with a lamp body (2), characterized in that: The lamp body (2) comprises a lamp holder (3), a light source group (4) and a lens group (13); the light source group (4) comprises a low beam light group (5), a high beam light group (6), a first fill light group (7) and a second fill light group (8); The low beam light group (5) includes a plurality of low beam light sources (9) which are rotatably matched with the outer ring of the lamp holder (3) in a circular array; the first fill light group (7) includes a plurality of first fill light sources (10) which are rotatably matched with the inner ring of the lamp holder (3) in a circular array; the high beam light group (6) includes a plurality of high beam light sources (11) which are rotatably matched with the lamp holder (3) and located between the low beam light group (5) and the first fill light group (7); the second fill light group (8) includes a plurality of second fill light sources (12) which are rotatably matched with the lamp holder (3) and located between the low beam light group (5) and the first fill light group (7); each group of the second fill light sources (12) is located between two adjacent groups of the high beam light sources (11); The lens group (13) comprises a first lens (14), a second lens (15) and a Fresnel lens (16); the distribution curvature of the first lens (14) is greater than that of the second lens (15); the outer curved surface of the Fresnel lens (16) is in a ring-shaped sawtooth shape; the low beam light source (9) adopts the first lens (14); the high beam light source (11) adopts the second lens (15); and the first fill light source (10) and the second fill light source (12) both adopt the Fresnel lens (16).

2. The novel surgical shadowless lamp according to claim 1 is characterized in that: The low beam light source (9), the high beam light source (11), the first fill light source (10), and the second fill light source (12) all comprise a frame body (17), the frame body (17) comprises a bottom plate (18), and two symmetrical rotating shafts (19) are fixedly connected to the peripheral side surface of the bottom plate (18), and the rotating shafts (19) are rotatably matched with the lamp holder (3).

3. The novel surgical shadowless lamp according to claim 2 is characterized in that: A connecting ring (20) is fixedly connected to one side of the base plate (18); a light source (42) is fixedly installed in the connecting ring (20) on one side of the base plate (18); a housing (21) is threadedly connected to the outer peripheral side of the connecting ring (20); and a retaining ring (22) is snap-fitted to the inner peripheral side of the housing (21).

4. The novel surgical shadowless lamp according to claim 3 is characterized in that: The housing (21) in the low-beam light source (9) is snap-fitted with the first lens (14), the housing (21) in the high-beam light source (11) is snap-fitted with the second lens (15), and the housings (21) in the first fill-light source (10) and the second fill-light source (12) are snap-fitted with the Fresnel lens (16).

5. The novel surgical shadowless lamp according to claim 4 is characterized in that: A sleeve (23) is fixedly connected to the other side of the bottom plate (18), a T-shaped rod (24) is slidably fitted inside the sleeve (23), and a connecting ball (25) is fixedly connected to one end of the T-shaped rod (24).

6. The novel surgical shadowless lamp according to claim 5 is characterized in that: A rear cover (26) is fixedly mounted on one side of the lamp holder (3), a first circular ring (27) is rotatably mounted inside the rear cover (26), a plurality of first arc-shaped sliding grooves (28) are provided on one side of the first circular ring (27) in a circumferential array, a connecting ball (25) in the first fill light source (10) is slidably mounted on the first arc-shaped sliding grooves (28), and a first shifting plate (36) is fixedly connected to one side of the first circular ring (27) and is slidably mounted on the rear cover (26).

7. The novel surgical shadowless lamp according to claim 6 is characterized in that: A second circular ring (29) is rotatably engaged in the rear cover (26), a plurality of second arc-shaped sliding grooves (30) are provided in a circular array on one side of the second circular ring (29), a connecting ball (25) in the second fill light source (12) is slidably engaged with the second arc-shaped sliding grooves (30), and a second shifting plate (37) slidably engaged with the rear cover (26) is fixedly connected to one side of the second circular ring (29).

8. The novel surgical shadowless lamp according to claim 7 is characterized in that: A third circular ring (31) is rotatably engaged in the rear cover (26), a plurality of third arc-shaped sliding grooves (32) are provided in a circumferential array on one side of the third circular ring (31), a connecting ball (25) in the high-beam light source (11) is slidably engaged with the third arc-shaped sliding grooves (32), and a third shift plate (38) slidably engaged with the rear cover (26) is fixedly connected to one side of the third circular ring (31).

9. The novel surgical shadowless lamp according to claim 8 is characterized in that: A fourth circular ring (33) is rotatably engaged in the rear cover (26), a plurality of fourth arc-shaped sliding grooves (34) are provided in a circumferential array on one side of the fourth circular ring (33), a connecting ball (25) in the low-beam light source (9) is slidably engaged with the fourth arc-shaped sliding grooves (34), and a fourth shift plate (39) slidably engaged with the rear cover (26) is fixedly connected to the circumferential side surface of the fourth circular ring (33).

10. The novel surgical shadowless lamp according to claim 9 is characterized in that: A connecting plate (35) is slidably fitted between two adjacent T-shaped rods (24) in the high beam lamp group (6) and the second fill light lamp group (8), and two symmetrical through grooves (40) are formed through one side of the connecting plate (35). The two through grooves (40) are slidably fitted with the two T-shaped rods (24) respectively, and a handle (41) is fixedly connected to the center of the lamp holder (3).

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