An LED bulb and method of assembling the same

Abstract

The application discloses an LED bulb lamp and an assembling method thereof, and belongs to the technical field of lamps. The LED bulb lamp comprises a lamp body, a light source plate and a lampshade, wherein the light source plate is arranged on the lamp body; the telescopic assembly comprises an inner ring, a middle ring and an outer ring, the inner ring is sleeved on the lamp body, and the inner ring and the lamp body and the middle ring and the outer ring are both limited by elastic buckle mechanisms; the outer side of the middle ring is provided with a third tooth groove, the outer ring is slidably connected with an adjusting rod, the end of the adjusting rod is provided with a tooth tip, and the adjusting rod is sleeved with a second elastic piece for pushing the tooth tip and the third tooth groove to engage; and the outer ring is provided with a light shielding assembly. The inner ring, the middle ring and the outer ring of the telescopic assembly are matched with the differential locking mechanism, so that two light range adjustment modes, i.e., a fine mode and a fast mode, are realized; in the fine mode, the outer ring can be adjusted alone, small-range spotlight adjustment is realized, and the fine mode is suitable for local key lighting; and in the fast mode, the three rings are synchronously lowered, and the switching from wide angle to narrow angle can be quickly realized.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more specifically, to an LED bulb and its assembly method. Background Technology

[0002] LED bulbs, as a new type of energy-saving lighting product to replace traditional incandescent bulbs, have been widely used in home, commercial, and industrial lighting due to their advantages such as low energy consumption, long lifespan, and environmental friendliness. With the rapid development of LED technology, the market's functional requirements for LED bulbs have evolved from simple basic lighting to intelligent and multifunctional applications.

[0003] Existing LED bulbs have a fixed illumination range and cannot be adjusted according to actual usage scenarios. Although some products use silicon controlled rectifier (SCR) dimming chips to achieve brightness adjustment, this dimming method only changes the LED drive current and cannot change the illumination angle or range. When users need to switch from wide-angle lighting to focused lighting, they must replace the bulb with a different type, resulting in poor flexibility. Therefore, we propose an LED bulb and its assembly method. Summary of the Invention

[0004] The purpose of this invention is to provide an LED bulb and its assembly method, which solves the technical problem that the illumination range of existing LED bulbs is fixed and cannot be adjusted according to actual use scenarios.

[0005] This invention provides an LED bulb lamp, including a lamp body, a light source board mounted on the lamp body, and a lamp cover; The telescopic assembly includes an inner ring, a middle ring, and an outer ring that slide together. The inner ring is fitted onto the lamp body, and the inner ring and the lamp body, as well as the middle ring and the outer ring, are limited by a spring-loaded mechanism. The outer side of the middle ring is provided with a third tooth groove, and an adjusting rod is slidably connected to the outer ring. The end of the adjusting rod is equipped with a tooth tip, and a second elastic element for pushing the tooth tip and engaging with the third tooth groove is fitted on the adjusting rod. A light-shielding component is installed on the outer ring; The tooth tip and the third tooth groove mesh, and the inner ring, middle ring and outer ring work together to adjust the raising and lowering of the light-shielding component; or the adjusting rod drives the tooth tip and the third tooth groove to separate, so that the outer ring can independently drive the raising and lowering of the light-shielding component.

[0006] As a further description of the above technical solution, a guide groove and a first limiting groove are provided on the outer side of the lamp body. The first limiting groove and the guide groove are connected through an adjustment groove. A limiting block is installed on the inner side of the inner ring. The limiting block protrudes inward from the inner ring and is inserted into the first limiting groove through the guide groove and the adjustment groove.

[0007] As a further description of the above technical solution, a top plate is slidably connected to the limiting block, and the top plate and the limiting block are connected by a first elastic element. The sum of the heights of the top plate and the limiting block is not greater than the height of the adjusting groove, and the width of the limiting block is equal to the width of the first limiting groove.

[0008] As a further description of the above technical solution, the spring-loaded mechanism includes a toothed groove and a spring piece that engages with the toothed groove. The toothed groove and the spring piece are disposed at the connection between the inner ring and the lamp body, and between the middle ring and the outer ring.

[0009] As a further description of the above technical solution, the height of the outer ring is less than the height of the middle ring.

[0010] As a further description of the above technical solution, a pull rod is installed on the adjusting rod, and a fixing rod is fixedly installed on the outer ring.

[0011] As a further description of the above technical solution, the light-shielding component includes a cover plate that rotates on an outer ring. A guide tube is installed on the cover plate, and adjustment holes are opened on both sides of the guide tube. An adjustment plate is slidably connected to one side of the guide tube. A fixing ring is installed on the adjustment plate, and a fourth tooth groove is opened on the inner side of the fixing ring. A light-emitting hole is opened on the cover plate.

[0012] As a further description of the above technical solution, the LED bulb also includes a rotating plate with a plug installed on it. The rotating plate cooperates with the light emission hole, the plug is adapted to the guide tube, and a support shaft is installed on the plug. The support shaft slides in the adjustment hole, passes through the adjustment plate and is inserted into the fixing ring. A third spring is fixedly connected to the support shaft.

[0013] As a further description of the above technical solution, positioning grooves are provided on both sides of the light-emitting hole; a positioning block is fixedly connected to the rotating plate, and the positioning block is inserted into the positioning groove to limit the rotation plate.

[0014] This embodiment also discloses an LED bulb assembly method, which includes using the above-mentioned LED bulb and further includes the following steps: S1. Install the light source board and lampshade onto the lamp body; S2. Align the limiting block on the inner side of the inner ring with the guide groove on the outer side of the lamp body and insert it into the adjustment groove; S3. Rotate the inner ring so that the limiting block is aligned with the first limiting groove. The inner ring slides along the lamp body axis and is installed on the lamp body through the spring-loaded mechanism.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This invention achieves two lighting range adjustment modes: fine and fast, through a three-layer ring structure consisting of an inner ring, a middle ring, and an outer ring, combined with a differentiated locking mechanism. In fine mode, the outer ring can be adjusted independently to achieve small-range focused lighting adjustment, suitable for localized key lighting. In fast mode, all three rings descend simultaneously, enabling rapid switching from wide-angle to narrow-angle lighting.

[0016] 2. The cover plate of the light-shielding component of the present invention can be rotated 360° to select the light output direction through the cooperation of the adjusting ring and the ring groove; the rotating plate of the flip component can achieve directional lighting through the cooperation of the spring and the tooth groove; the same lamp can realize multiple functions such as full-circle lighting, directional focusing, and side projection; the projection direction can be changed without reinstalling the lamp body, which greatly improves the convenience of use; it is suitable for various directional lighting scenarios such as display cabinets, reading areas, and background walls. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an LED bulb lamp disclosed in a preferred embodiment of the present invention; Figure 2 This is a cross-sectional view of an LED bulb lamp disclosed in a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the lamp body structure of an LED bulb lamp disclosed in a preferred embodiment of the present invention; Figure 4 The LED bulb lamp disclosed in a preferred embodiment of the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 The LED bulb lamp disclosed in a preferred embodiment of the present invention Figure 2 Enlarged view at point B in the middle; Figure 6 This is a schematic diagram of the telescopic component structure of an LED bulb lamp disclosed in a preferred embodiment of the present invention; Figure 7 This is a cross-sectional view of a telescopic component of an LED bulb disclosed in a preferred embodiment of the present invention; Figure 8 The LED bulb lamp disclosed in a preferred embodiment of the present invention Figure 7 Enlarged view at point C; Figure 9 This is a schematic diagram of the connection structure between the middle ring and the inner ring of an LED bulb disclosed in a preferred embodiment of the present invention; Figure 10 The LED bulb lamp disclosed in a preferred embodiment of the present invention Figure 9 Enlarged view at point D; Figure 11 This is a schematic diagram of the adjustment rod connection structure of an LED bulb lamp disclosed in a preferred embodiment of the present invention; Figure 12The LED bulb lamp disclosed in a preferred embodiment of the present invention Figure 11 Enlarged view at point E in the middle; Figure 13 The LED bulb lamp disclosed in a preferred embodiment of the present invention Figure 1 Enlarged view at point F; Figure 14 This is a schematic diagram of the light-shielding component structure of an LED bulb lamp disclosed in a preferred embodiment of the present invention; Figure 15 This is a schematic diagram of the flip-up assembly structure of an LED bulb lamp disclosed in a preferred embodiment of the present invention; Figure 16 The LED bulb lamp disclosed in a preferred embodiment of the present invention Figure 15 Enlarged view of point G in the middle.

[0018] Explanation of the numbers in the diagram: 1. Lamp body; 2. Light source board; 3. Lampshade; 11. Guide groove; 12. First limiting groove; 13. Adjusting groove; 14. First toothed groove; 4. Telescopic component; 41. Inner ring; 42. Middle ring; 43. Outer ring; 44. Limiting block; 45. Top plate; 46. First elastic element; 47. First spring; 48. Second limiting groove; 49. Second toothed groove; 410. Guide block; 411. Second spring; 412. Third limiting groove; 413. Third toothed groove 414. Groove; 415. Adjusting rod; 416. Tooth tip; 417. Second elastic element; 418. Ring groove; 419. Pull rod; 410. Fixing rod; 5. Shielding assembly; 51. Cover plate; 52. Adjusting ring; 53. Guide tube; 54. Adjusting hole; 55. Adjusting plate; 56. Fixing ring; 57. Fourth tooth groove; 58. Light hole; 59. Positioning groove; 6. Flip assembly; 61. Rotating plate; 62. Plug; 63. Support shaft; 64. Third spring piece; 65. Positioning block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Reference Figures 1 to 16This embodiment discloses an LED bulb lamp, including a lamp body 1, a light source board 2, and a lamp cover 3. The lamp body 1 includes a housing and a lamp head mounted on the top of the housing. The housing adopts a plastic-coated aluminum process, in which polyethylene material is injection molded and wrapped around the outside of an aluminum cup, thereby improving the heat dissipation effect of the lamp body 1. The light source board 2 includes a substrate and an LED chip encapsulated on the substrate. The substrate can be an aluminum substrate or a ceramic substrate, depending on the heat dissipation requirements. The light source board 2 is installed in the housing of the lamp body 1 by adhesive, snap-fit, or screw connection. The lamp cover 3 is installed on the housing of the lamp body 1 by snap-fit ​​or screw connection to improve the softness of the light and reduce glare.

[0021] Reference Figure 4 The lamp body 1 has a guide groove 11 and a first limiting groove 12 axially opened on the outer side. The first limiting groove 12 and the guide groove 11 are connected by an adjustment groove 13. A first toothed groove 14 is provided in the first limiting groove 12. The highest point of the first toothed groove 14 is at a certain distance from the adjustment groove 13.

[0022] Reference Figures 5 to 12 A telescopic assembly 4 is installed on the lamp body 1. The telescopic assembly 4 includes an inner ring 41, a middle ring 42 and an outer ring 43. A limiting block 44 is fixedly installed on the inner side of the inner ring 41. The limiting block 44 protrudes inward from the inner ring 41. A top plate 45 is slidably connected to the limiting block 44. The top plate 45 and the limiting block 44 are connected by a first elastic member 46. The first elastic member 46 is used to push the top plate 45 to separate from the top of the limiting block 44. When the top of the top plate 45 and the top of the limiting block 44 are in contact, the sum of their heights is not greater than the height of the adjusting groove 13. The width of the limiting block 44 is equal to the width of the first limiting groove 12. A first spring piece 47 is fixedly connected to the limiting block 44.

[0023] When the inner ring 41 is installed on the lamp body 1, the limiting block 44 is aligned with the guide groove 11 and inserted into it, and the inner ring 41 is inserted into the lamp body 1. When the top plate 45 contacts the lamp body 1, the inner ring 41 is pushed and the first elastic member 46 is compressed until the top of the top plate 45 and the limiting block 44 are in contact. After rotating the inner ring 41 to the other end of the adjusting groove 13, the inner ring 41 is pulled away from the lamp body 1. The first elastic member 46 drives the top plate 45 to separate from the limiting block 44, and the limiting block 44 is inserted into the first limiting groove 12, realizing the sliding limitation of the inner ring 41 and the lamp body 1. The first spring piece 47 and the first toothed groove 14 form a spring buckle mechanism. When the first spring piece 47 is engaged in the first toothed groove 14, the movement of the inner ring 41 can be stopped, and the telescopic component 4 is installed on the lamp body 1.

[0024] Reference Figure 10The inner ring 41 has a second limiting groove 48 on its outer side, and a second toothed groove 49 is provided in the second limiting groove 48. A guide block 410 is fixedly installed on the middle ring 42. The middle ring 42 is slidably connected to the inner ring 41 along the axial direction through the guide block 410. A second spring piece 411 is fixedly connected to the guide block 410. The second spring piece 411 and the second toothed groove 49 form a spring-locking mechanism. The second spring piece 411 is locked in the second toothed groove 49, thereby realizing the limiting of the middle ring 42.

[0025] Reference Figure 6 and Figure 12 An outer ring 43 is fitted outside the middle ring 42 and slides along the axial direction of the middle ring 42. The height of the outer ring 43 is less than the height of the middle ring 42. A third limiting groove 412 is provided on the outer side of the middle ring 42, and a third tooth groove 413 is provided in the third limiting groove 412. An adjusting rod 414 is slidably connected to the outer ring 43. A tooth tip 415 is fixedly installed at the end of the adjusting rod 414. A second elastic element 416 is fitted on the adjusting rod 414. One end of the second elastic element 416 is fixedly connected to the adjusting rod 414, and the other end is fixedly connected to the outer ring 43. The second elastic element 416 is used to control the tooth tip 415 at the end of the adjusting rod 414 to insert into the third tooth groove 413, thereby limiting the outer ring 43 on the middle ring 42. A pull rod 418 is installed at the end of the adjusting rod 414 away from the tooth tip 415, and a fixing rod 419 is fixedly installed on the outer ring 43. A ring groove 417 is provided at the bottom of the outer ring 43.

[0026] When the adjusting rod 414 is pulled away from the outer ring 43, the second elastic element 416 is compressed, and the tooth tip 415 disengages from the third tooth groove 413. At this time, the height of the outer ring 43 can be adjusted independently. When the adjusting rod 414 is manually pushed closer to the outer ring 43, the tooth tip 415 is stably inserted into the third tooth groove 413. At this time, when the height of the outer ring 43 is adjusted downward, the middle ring 42 and the inner ring 41 move synchronously or one of them moves to the next position, thereby realizing two modes of adjusting the illumination range.

[0027] Reference Figure 1 , Figures 13 to 16 The LED bulb also includes a light-shielding component 5 and a flipping component 6. The light-shielding component 5 includes a cover plate 51, which is trumpet-shaped with an inclination angle of 20°-45°. An adjusting ring 52 is fixedly installed on the cover plate 51. The cover plate 51 can rotate on the outer ring 43 through the cooperation of the adjusting ring 52 and the ring groove 417. A guide tube 53 is fixedly installed on the cover plate 51. Adjusting holes 54 are opened on both sides of the guide tube 53. An adjusting plate 55 is slidably connected to one side of the guide tube 53. A fixing ring 56 is fixedly installed on the adjusting plate 55. A fourth tooth groove 57 is opened on the inner side of the fixing ring 56. A light-emitting hole 58 is opened on the cover plate 51. Positioning grooves 59 are opened on both sides of the light-emitting hole 58.

[0028] When it is necessary to focus the light or slightly reduce the illumination range, by controlling only the outer ring 43 to descend while keeping the middle ring 42 and inner ring 41 stable, the outer ring 43 drives the cover plate 51 to descend, thus achieving the focusing or reduction of the illumination range. When it is necessary to quickly and significantly reduce the illumination, the middle ring 42 and inner ring 41 are controlled to descend, so that the middle ring 42 and inner ring 41 adjust the height of the cover plate 51 while assisting in blocking the illumination angle, thereby achieving a wide range and rapid adjustment of the illumination angle.

[0029] The flipping assembly 6 includes a rotating plate 61, on which a plug 62 is fixedly mounted. The rotating plate 61 cooperates with the light emission hole 58, and the rotating plate 61 can completely block the light emission hole 58. The plug 62 is adapted to the guide tube 53. A support shaft 63 is fixedly mounted on the plug 62. The support shaft 63 slides in the adjustment hole 54 and can be positioned within the length range of the adjustment hole 54. The support shaft 63 passes through the adjustment plate 55 and is inserted into the fixing ring 56. The support shaft 63 and the fixing ring 56 are coaxial. A third spring piece 64 is fixedly connected to the support shaft 63. A positioning block 65 is fixedly connected to the rotating plate 61. The positioning block 65 can be inserted into the positioning groove 59 to limit the tail end of the rotating plate 61.

[0030] The movement direction of the positioning block 65 within the positioning groove 59 is consistent with the movement direction of the plug 62 within the guide tube 53. When it is necessary to directionally illuminate the light source from the light outlet 58, the cover plate 51 is rotated to align the rotating plate 61 with the directional illumination position, and the plug 62 is pulled out of the guide tube 53. The support shaft 63 drives the adjusting plate 55 to move to the other end of the guide tube 53. At this time, the positioning block 65 has disengaged from the positioning groove 59. The rotating plate 61 is rotated outward to open the light outlet 58. The third spring 64 is adjusted in the fourth tooth groove 57. When the adjusting plate 55 stops rotating, the third spring 64 is engaged in the corresponding fourth tooth groove 57, restricting the rotation of the support shaft 63 and the rotating plate 61, thereby adjusting the light emitted from the light outlet 58.

[0031] This embodiment also discloses an LED bulb assembly method, including the following steps: S1. Install the light source board 2 onto the lamp body 1 with bolts, and then screw the lamp cover 3 onto the lamp body 1; S2. Align the limiting block 44 on the inner side of the inner ring 41 with the guide groove 11 on the outer side of the lamp body 1 and insert it. When the top plate 45 contacts the outer wall of the lamp body 1, continue to press the inner ring 41 inward. The first elastic element 46 is compressed. The top plate 45 and the top of the limiting block 44 are in contact. The total height of the two is not greater than the height of the adjustment groove 13. The limiting block 44 can enter the adjustment groove 13. S3. Rotate the inner ring 41 or the middle ring 42 to align the limiting block 44 with the first limiting groove 12. After releasing the pressure, the first elastic element 46 rebounds, and the top plate 45 pops outward to push the limiting block 44 into the first limiting groove 12. At this time, the width of the limiting block 44 is matched with the width of the first limiting groove 12. The inner ring 41 can only slide along the axial direction of the lamp body 1 and cannot rotate circumferentially. S4. The first spring plate 47 on the limiting block 44 engages with the first tooth groove 14 in the first limiting groove 12. When the inner ring 41 slides, it will generate gear feedback every time it moves by one tooth pitch. After the force is stopped, the first spring plate 47 is locked in the first tooth groove 14 to fix the height of the inner ring 41 and realize multi-gear adjustment.

[0032] Working principle The telescopic component 4 of the bulb has different adjustment modes, enabling two levels of illumination range control: Fine-tuning within a small range: Pull only the lever 418 to unlock the outer ring 43, keeping the middle ring 42 and inner ring 41 in a fixed position, and slide the outer ring 43 downwards alone. At this time, the cover plate 51 of the light-shielding component 5 at the bottom of the outer ring 43 will drop simultaneously. The edge of the cover plate 51 will extend further beyond the light-emitting surface of the lampshade 3, blocking the outer emission angle of the light and achieving a slight reduction in the illumination range, which is suitable for fine-tuning of local key lighting.

[0033] Rapid wide-range dimming: Keep the adjustment rod 414 locked and push the outer ring 43 directly downward. At this time, the outer ring 43, middle ring 42 and inner ring 41 slide downward simultaneously, and the three sections extend at the same time. The cover plate 51 descends a greater distance. At the same time, the side walls of the inner ring 41 and middle ring 42 will also block the lateral emission of light, which can quickly reduce the light angle from wide-angle illumination to narrow-angle focusing.

[0034] The light-shielding component 5, in conjunction with the flipping component 6, enables targeted and directional light emission. Light emission position selection: The cover plate 51 is locked in the annular groove 417 at the bottom of the outer ring 43 by the adjusting ring 52, and can rotate 360° in all directions. The light emission hole 58 can be rotated to the direction of light emission required as needed, and the light in other directions except the opening of the cover plate 51 is blocked.

[0035] Light emission hole 58 opening and angle adjustment: In the initial state, the rotating plate 61 completely blocks the light emission hole 58, the positioning block 65 is inserted into the positioning groove 59, and the rotating plate 61 is completely fixed; when it is necessary to open the directional light emission, the rotating plate 61 is pulled outward, the plug 62 is pulled out from the guide tube 53, the support shaft 63 slides along the adjustment hole 54 of the guide tube 53, and drives the adjustment plate 55 to move to the other end of the guide tube 53. At this time, the positioning block 65 is disengaged from the positioning groove 59, and the rotating plate 61 can rotate around the support shaft 63.

[0036] The third spring 64 on the support shaft 63 engages with the fourth tooth groove 57 inside the fixing ring 56. After the rotating plate 61 is rotated to the specified angle, the third spring 64 is locked into the corresponding fourth tooth groove 57 to lock the angle, thereby realizing the adjustment of the light output direction from 0 to 90° to meet different directional lighting needs such as side and oblique lighting.

[0037] During reset, rotate the rotating plate 61 in the opposite direction until the plug 62 and the guide tube 53 are parallel, push the rotating plate 61 inward, and the plug 62 is reinserted into the light outlet hole 58. The positioning block 65 is engaged in the positioning groove 59, and the rotating plate 61 completely blocks the light outlet hole 58 to restore the full circumferential illumination mode.

[0038] 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. An LED bulb, characterized in that: Includes a lamp body (1), a light source plate (2) mounted on the lamp body (1), and a lamp cover (3); The telescopic assembly (4) includes an inner ring (41), a middle ring (42) and an outer ring (43) that slide together. The inner ring (41) is fitted onto the lamp body (1). The inner ring (41) and the lamp body (1) are both limited by a snap-lock mechanism, as are the middle ring (42) and the outer ring (43). The outer side of the middle ring (42) is provided with a third tooth groove (413), and an adjusting rod (414) is slidably connected on the outer ring (43). The end of the adjusting rod (414) is equipped with a tooth tip (415), and a second elastic element (416) for pushing the tooth tip (415) and the third tooth groove (413) to mesh is fitted on the adjusting rod (414). A light-shielding component (5) is installed on the outer ring (43); The tooth tip (415) and the third tooth groove (413) mesh, and the inner ring (41), middle ring (42) and outer ring (43) work together to adjust the lifting and lowering of the light-shielding component (5); or the adjusting rod (414) drives the tooth tip (415) and the third tooth groove (413) to separate, so that the outer ring (43) independently drives the lifting and lowering of the light-shielding component (5).

2. The LED bulb according to claim 1, characterized in that: The lamp body (1) has a guide groove (11) and a first limiting groove (12) on its outer side. The first limiting groove (12) and the guide groove (11) are connected through an adjustment groove (13). A limiting block (44) is installed on the inner side of the inner ring (41). The limiting block (44) protrudes inward from the inner ring (41). The limiting block (44) is inserted into the first limiting groove (12) through the guide groove (11) and the adjustment groove (13).

3. The LED bulb according to claim 2, characterized in that: A top plate (45) is slidably connected to the limiting block (44). The top plate (45) and the limiting block (44) are connected by a first elastic element (46). The sum of the heights of the top plate (45) and the limiting block (44) is not greater than the height of the adjusting groove (13). The width of the limiting block (44) is equal to the width of the first limiting groove (12).

4. The LED bulb according to claim 1, characterized in that: The spring-loaded mechanism includes a toothed groove and a spring piece that engages with the toothed groove. The toothed groove and the spring piece are located at the connection between the inner ring (41) and the lamp body (1), the middle ring (42) and the outer ring (43).

5. The LED bulb according to claim 1, characterized in that: The height of the outer ring (43) is less than the height of the middle ring (42).

6. The LED bulb according to claim 1, characterized in that: A pull rod (418) is installed on the adjusting rod (414), and a fixing rod (419) is fixedly installed on the outer ring (43).

7. The LED bulb according to claim 1, characterized in that: The light-shielding component (5) includes a cover plate (51) that rotates on an outer ring (43). A guide tube (53) is installed on the cover plate (51). An adjustment hole (54) is opened on both sides of the guide tube (53). An adjustment plate (55) is slidably connected to one side of the guide tube (53). A fixing ring (56) is installed on the adjustment plate (55). A fourth tooth groove (57) is opened on the inner side of the fixing ring (56). A light-emitting hole (58) is opened on the cover plate (51).

8. The LED bulb according to claim 7, characterized in that: The LED bulb also includes a rotating plate (61), on which a plug (62) is installed. The rotating plate (61) is matched with the light outlet (58), and the plug (62) is matched with the guide tube (53). A support shaft (63) is installed on the plug (62). The support shaft (63) slides in the adjustment hole (54). The support shaft (63) passes through the adjustment plate (55) and is inserted into the fixing ring (56). A third spring piece (64) is fixedly connected to the support shaft (63).

9. The LED bulb according to claim 8, characterized in that: Positioning grooves (59) are provided on both sides of the light-emitting hole (58); a positioning block (65) is fixedly connected to the rotating plate (61), and the positioning block (65) is inserted into the positioning groove (59) to limit the rotation plate (61).

10. A method for assembling an LED bulb, comprising using the LED bulb of claim 2, characterized in that, It also includes the following steps: S1. Install the light source board (2) and lampshade (3) on the lamp body (1); S2. Align the limiting block (44) on the inner side of the inner ring (41) with the guide groove (11) on the outer side of the lamp body (1) and insert it into the adjustment groove (13); S3. Rotate the inner ring (41) to align the limiting block (44) with the first limiting groove (12). The inner ring (41) slides along the axial direction of the lamp body (1) and is installed on the lamp body (1) through the spring-loaded mechanism.

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