Magnetic lens lamp tube

Abstract

The application discloses a magnetic lens lamp tube, which directly adsorbs the inner wall of a lamp shell through a magnet passing through a lamp plate through hole, rigidly connects the lamp plate and a lens cover as a whole, ensures that lamp beads are always accurately aligned with the focal point of the convex lens during transportation or assembly, and completely eliminates the light spot distortion problem caused by the misplacement of components in the traditional structure; meanwhile, the magnetic adsorption design realizes tool-free assembly of "one paste", greatly improves the production and maintenance efficiency, and because of the close fit, the sealing layer between the lamp plate and the lens cover is uniformly pressed, the waterproof and dustproof performance is significantly enhanced, and the overall service life of the lamp tube is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of lamp technology, and in particular relates to a magnetic lens lamp. Background Technology

[0002] In existing technologies, traditional lens lamps have many shortcomings in assembly and structural design. Firstly, the lens cover is typically attached to the lamp housing, and the lamp plate is snapped onto the housing. There is no direct connection between the lens cover and the lamp plate, making it prone to misalignment during transportation or assembly. This can lead to misalignment between the lens cover and the lamp plate, causing the LEDs on the lamp plate to not be precisely positioned at the focal point of the convex lens, affecting the luminous effect. Furthermore, the current installation process is complex, often requiring additional tools and cumbersome procedures, reducing production efficiency and increasing labor costs. Secondly, the end caps at both ends of the lamp lack flexibility and stability, easily loosening or even falling off, affecting the overall sealing and safety of the lamp. In addition, traditional lamps lack effective limiting and guiding designs in their internal structure, resulting in low precision in the fit between components, which in turn affects the luminous effect and lifespan of the lamp. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] In order to overcome the above shortcomings, the purpose of this utility model is to provide a magnetic lens lamp tube to solve the technical problems of existing lamp tubes and lamp panels being prone to misalignment, resulting in misalignment between the lens cover and the lamp panel affecting the light emission effect, complex installation process reducing production efficiency and increasing labor costs, and lack of flexibility and stability in fixing the end cap.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] A magnetic lens lamp tube includes: a lamp housing with a receiving cavity formed on the front side for accommodating a lamp plate having a plurality of sequentially arranged lamp beads, a plurality of through holes being opened at predetermined positions on the lamp plate, a lens cover having a plurality of convex lenses corresponding one-to-one with the lamp beads being covered on the front side of the lamp plate, and a magnet being provided on the lens cover at the position corresponding to the through hole, which passes through the through hole and attracts each other to the inner side of the receiving cavity, and further includes: plugs respectively fitted on both ends of the lamp housing.

[0008] By using magnets to directly attach to the inner wall of the lamp housing through the through-holes in the lamp panel, the lamp panel and lens cover are rigidly connected as one unit. This ensures that the lamp beads are always precisely aligned with the focal point of the convex lens during transportation or assembly, completely eliminating the problem of light spot distortion caused by component misalignment in traditional structures. At the same time, the magnetic design enables tool-free assembly with "one-click" attachment, greatly improving production and maintenance efficiency. Furthermore, the tight fit ensures that the sealing layer between the lamp panel and the lens cover is evenly pressurized, significantly enhancing waterproof and dustproof performance and extending the overall lifespan of the lamp tube.

[0009] In some embodiments, the two ends of the inner side of the lens cover are horizontally recessed inward to form a limiting groove, and the two ends of the lamp plate are protruded outward to form a limiting post located in the limiting groove and abutting against the groove wall.

[0010] The combination of the limiting groove and the limiting post effectively restricts the horizontal displacement of the lens cover, avoids the slight displacement of the magnetic structure caused by vibration, further ensures the optical alignment accuracy of the lamp bead and the lens, and improves the uniformity of illumination and product reliability.

[0011] In some embodiments, slots are provided on the upper and lower sides of the cavity along its length for the upper and lower edges of the lens cover to be inserted.

[0012] The slot design allows the lens cover edge to be embedded and form a rigid two-dimensional connection with the lamp housing, preventing the lens cover from shifting forward, backward, or vertically.

[0013] In some embodiments, the side of the plug corresponding to the front side of the lamp housing forms a first fixed wall whose upper and lower edges respectively abut against the upper and lower outer edges of the receiving cavity.

[0014] The first fixing wall forms a secondary fixation on the front side of the lamp housing through physical contact, preventing the plug from falling off due to external force, enhancing the end sealing, blocking dust and moisture from entering the cavity, and ensuring the safety of internal electronic components. The first fixing wall can also strengthen the pressing and fixing of the end position of the lens cover, further improving the stability of the lens cover installation.

[0015] In some embodiments, the first fixed wall forms an arc-shaped notch.

[0016] The arc-shaped notch avoids blocking the light output angle on both sides of the lamp tube, eliminates dark areas at the edges, expands the effective lighting range, and at the same time maintains the mechanical support function of the fixed wall, achieving a balance between structural design and optical performance.

[0017] In some embodiments, the plug forms multiple elastic fixing parts on the edges of the upper and lower sides of the lamp housing that abut against the inner side of the lamp housing.

[0018] The elastic fixing part continuously applies inward pressure through deformation, which compensates for the gap caused by manufacturing tolerances, eliminates plug wobbling, improves end installation stability, and reduces the risk of vibration and abnormal noise.

[0019] In some embodiments, a guide strip is formed inside the lamp housing along its length, and a clamping guide strip that matches the size of the guide strip is formed between two adjacent elastic fixing parts of the plug, and a guide groove is formed for the guide plug to move along the guide strip.

[0020] The cooperation between the guide groove and the guide strip allows the plug to slide in along the predetermined path, avoiding sealing failure caused by assembly misalignment; at the same time, the clamping design further strengthens radial fixation, realizing "assembly as calibration".

[0021] In some embodiments, the plug forms a second fixed wall with a positioning block on the side corresponding to the rear side of the lamp housing, and a positioning groove for the positioning block to be inserted is provided on the rear side of the lamp housing.

[0022] The elastic engagement between the positioning block and the positioning groove forms an axial hard stop, preventing the plug from sliding axially. Together with the first fixed wall, it forms a front and rear end coordinated locking system, completely solving the problem of traditional lamp tube plugs being easy to loosen. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the magnetic lens lamp tube of this utility model from a first-view perspective.

[0024] Figure 2 This is a structural schematic diagram of the magnetic lens lamp tube of this utility model from a second perspective.

[0025] Figure 3 This is a cross-sectional view of the magnetic lens lamp tube of this utility model;

[0026] Figure 4 This is an exploded view of the magnetic lens lamp tube of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the lamp housing in the magnetic lens lamp tube of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the lamp plate in the magnetic lens lamp tube of this utility model;

[0029] Figure 7 This is a schematic diagram of the lens cover in the magnetic lens lamp tube of this utility model;

[0030] Figure 8 This is a schematic diagram of the plug in the magnetic lens lamp tube of this utility model from the first perspective.

[0031] Figure 9 This is a structural schematic diagram of the plug in the magnetic lens lamp tube of this utility model from the second perspective.

[0032] Figure label:

[0033] 1. Lamp housing; 101. Receiving cavity; 1011. Slot; 102. Guide strip; 2. Lamp panel; 201. Lamp bead; 202. Through hole; 203. Limiting post; 3. Lens cover; 301. Convex lens; 302. Magnet; 303. Limiting groove; 4. Plug; 401. First fixing wall; 4011. Arc-shaped notch; 402. Second fixing wall; 4021. Positioning block; 403. Elastic fixing part; 4031. Guide groove. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0035] This utility model provides a magnetic lens lamp tube, the core structure of which includes a lamp housing 1, a lamp board 2, a lens cover 3, and a plug 4. Specifically, the lamp housing 1 is made of magnetically absorbable metal material through extrusion molding, with a U-shaped receiving cavity 101 on the front side. The cavity is about 8mm deep and is used to accommodate the lamp board 2. The lamp board 2 is a long strip PCB substrate, with multiple LED beads 201 mounted on the surface. The spacing of the LED beads 201 strictly matches the focal length of the lens. Through holes 202 with a diameter of about 3mm are punched at predetermined positions on the lamp board 2, and the number of through holes 202 corresponds to the number of magnets 302. The lens cover 3 is injection molded from optical-grade PC plastic, and the inner surface is distributed with an array of hemispherical convex lenses 301. Each convex lens 301 is aligned with one LED bead 201. The magnets 302 can be fixed to the lens cover 3 by gluing or integral injection molding. Cylindrical neodymium iron boron magnets 302 (3mm in diameter and 2mm in thickness) are embedded on the back of the lens cover 3 at the positions corresponding to the through holes 202. During assembly, the magnet 302 passes through the through hole 202 of the lamp plate 2 and is directly attracted to the inner side of the receiving cavity 101, forming a rigid connection. Furthermore, flame-retardant PP material plugs 4 are sleeved at both ends of the lamp housing 1, and the inner wall of the plugs 4 is provided with a sealing ring to achieve waterproofing.

[0036] Based on this, horizontally extending limiting grooves 303, approximately 1.5 mm deep, are machined at both ends of the inner side of the lens cover 3. Specifically, copper limiting posts 203 (2 mm in diameter, 1.8 mm in height) are welded to both ends of the lamp plate 2. During assembly, the limiting posts 203 are embedded in the limiting grooves 303, with their surfaces abutting against the groove walls. In this way, even under external impact, the mechanical contact between the limiting posts 203 and the groove walls effectively prevents lateral displacement of the lens cover 3, ensuring the alignment accuracy of the optical components.

[0037] Furthermore, slots 1011 are milled along the length of the upper and lower sidewalls of the receiving cavity 101. The upper and lower edges of the lens cover 3 are designed as matching protrusions, which are pressed into the slots 1011 during assembly to form an interference fit. It is worth noting that the slots 1011 extend through the entire lamp housing 1, and the protrusions are continuously distributed, so that the lens cover 3 is supported along its entire length, preventing sagging and deformation in the middle.

[0038] For the plug 4 structure, a first fixing wall 401 extends from the side facing the front of the lamp housing 1. The height of this wall is flush with the outer edge of the receiving cavity 101, and the wall thickness is approximately 1.2 mm. Preferably, the upper and lower edges of the first fixing wall 401 are chamfered, so that during assembly, the chamfered surface tightly abuts against the metal edge of the outer edge of the receiving cavity 101, forming an axial constraint. Alternatively, a rubber buffer strip can be added to the abutment surface to reduce vibration noise.

[0039] Specifically, an arc-shaped notch 4011 is provided in the middle of the first fixed wall 401, and the curvature of the notch matches the light emission angle of the lamp tube (typically 120°). This design allows light to shine out of the notch without obstruction, increasing the luminous flux on both sides by 10% compared to a traditional flat wall structure.

[0040] Multiple elastic fixing parts 403 are provided on the upper and lower edges of the plug 4 where it contacts the lamp housing 1. Each elastic fixing part 403 is made of TPE material. During assembly, the fixing part is deformed under pressure to generate elastic force, so that the fixing part and the inner surface of the lamp housing 1 are interference fit. Preferably, a stainless steel spring can also be used to replace TPE to achieve the same function.

[0041] Based on this, at least one ABS guide strip 102 is molded along the length of the inner wall of the lamp housing 1. A guide groove 4031 is formed between adjacent elastic fixing parts 403 on the inner wall of the plug 4, and the groove width matches the guide strip 102 to form an interference fit. In this way, when the plug 4 is assembled, the guide groove 4031 slides along the guide strip 102, which not only corrects the installation angle, but also enhances the radial fixing force by compressing the guide strip 102 through the groove wall.

[0042] Finally, a second elastic fixing wall 402 is provided on the side of the plug 4 facing the rear of the lamp housing 1. A positioning block 4021 protrudes from the center of this wall, while a corresponding positioning groove is injection-molded on the rear side of the lamp housing 1. During assembly, the positioning block 4021 is compressed and deformed until it clicks into the positioning groove, forming an axial hard lock. Preferably, the positioning block 4021 can be made of nylon to improve wear resistance.

[0043] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A magnetically attached lens lamp tube, characterized in that, include: The lamp housing (1) has a receiving cavity (101) formed on the front side for accommodating a lamp plate (2) with a plurality of lamp beads (201) arranged in sequence. The lamp plate (2) has a plurality of through holes (202) at predetermined positions. A lens cover (3) with a plurality of convex lenses (301) corresponding one-to-one with the lamp beads (201) is provided on the front side of the lamp plate (2). The lens cover (3) is provided with a magnet (302) that passes through the through hole (202) and attracts each other to the inner side of the receiving cavity (101) at the position corresponding to the through hole (202). The lamp housing (1) also includes plugs (4) respectively sleeved on both ends of the lamp housing (1).

2. The magnetic lens lamp tube according to claim 1, characterized in that, The inner side of the lens cover (3) is horizontally recessed at both ends to form a limiting groove (303), and the upper two ends of the lamp plate (2) protrude outward to form a limiting post (203) located in the limiting groove (303) and abutting against the groove wall of the limiting groove (303).

3. The magnetic lens lamp tube according to claim 1, characterized in that, The cavity (101) has slots (1011) on its upper and lower sides along its length for the upper and lower edges of the lens cover (3) to be inserted.

4. The magnetic lens lamp tube according to claim 1, characterized in that, The plug (4) forms a first fixed wall (401) on the side corresponding to the front of the lamp housing (1), and its upper and lower edges respectively abut against the upper and lower outer edges of the receiving cavity (101).

5. The magnetic lens lamp tube according to claim 4, characterized in that, The first fixed wall (401) forms an arc-shaped notch (4011).

6. The magnetic lens lamp tube according to claim 1, characterized in that, The plug (4) forms multiple elastic fixing parts (403) on the edges of the upper and lower sides of the lamp housing (1) that abut against the inner side of the lamp housing (1).

7. The magnetic lens lamp tube according to claim 6, characterized in that, Inside the lamp housing (1), a guide strip (102) is formed along its length. Between two adjacent elastic fixing parts (403) of the plug (4), a guide groove (4031) is formed to clamp the guide strip (102) and guide the plug (4) to move along the guide strip (102) in accordance with the size of the guide strip (102).

8. The magnetic lens lamp tube according to claim 1, characterized in that, The plug (4) forms a second fixed wall (402) with a positioning block (4021) on the side corresponding to the rear side of the lamp housing (1). The rear side of the lamp housing (1) is provided with a positioning groove for the positioning block (4021) to be inserted.

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