A lamp with a quickly replaceable driving board

Abstract

The application discloses a lamp with a replaceable driving board, which comprises a shell, a light source board and a driving board. The shell has first and second chambers distributed axially, the light source board is arranged in the first chamber, and the driving board is arranged in the second chamber. The inner side wall of the second chamber is provided with a guide limiting groove along the length direction to support the edge of the driving board. The driving board is provided with a fixing hole. The lamp is provided with an elastic positioning member, the upper end of which penetrates into the fixing hole, and the lower end of which elastically abuts against the bottom wall of the second chamber. The driving board is constrained at a predetermined position under the action of elastic force and friction force. The elastic positioning member presses the driving board against the guide limiting groove, the friction force limits the horizontal movement, the fixing is reliable and the driving board can be pulled out horizontally without tools, so that the difficulty in separation caused by gluing and the screw slipping are avoided. The elastic positioning member can adapt to the size deviation, maintain the pressing force, avoid over-tightening or over-looseness during assembly, and improve the assembly yield and adaptability.

Description

Technical Field

[0001] This utility model belongs to the field of lighting technology, and in particular relates to a lighting fixture with a quick-change driver board. Background Technology

[0002] The driver circuit board houses large components such as transformers, capacitors, and inductors, resulting in an uneven distribution of gravity and considerable weight. If simply fixed in a way that causes vibration, it is prone to loosening, leading to poor electrical contact between the driver board and the light source board, affecting the normal operation and reliability of the luminaire. Therefore, driver circuit boards are typically installed inside the housing using adhesive bonding or screw fastening. While adhesive bonding allows for quick positioning and initial fixation, disassembly becomes extremely difficult after the adhesive cures, often requiring external prying for repair or replacement, which can easily damage the housing or surrounding electronic components. Screw fastening, on the other hand, is limited by the confined internal space, making it difficult to access tools, cumbersome to install and remove, and prone to stripping or loosening after repeated tightening. Furthermore, neither adhesive bonding nor screw fastening allows for fine-tuning of the driver board's installation position, making it difficult to accommodate dimensional tolerances between different batches of driver boards, resulting in poor assembly consistency. As luminaires become smaller and more integrated, with increasingly compact internal layouts, the shortcomings of traditional fixing methods in terms of maintenance convenience and reliability become increasingly apparent. There is an urgent need for a driver board installation solution that can reliably position the drive board and allow for quick and non-destructive disassembly and assembly. Utility Model Content

[0003] (a) Purpose of the utility model In order to overcome the above shortcomings, the purpose of this utility model is to provide a lamp with a driver board that can be quickly replaced, so as to solve the technical problems of the existing lamp driver board fixing structure, which has difficulties in disassembly, low maintenance efficiency, easily damaged parts and poor adaptability.

[0004] (II) Technical Solution To achieve the above objectives, the technical solution provided in this application is as follows: A luminaire with a quick-change driver board includes: a housing, a light source board, and a driver board electrically connected to the light source board. The housing has an axially distributed first chamber and a second chamber. The inner sidewall of the second chamber has two symmetrical guide limiting grooves along its length. The light source board is installed in the first chamber. The driver board is disposed in the second chamber with its two side edges inserted into the guide limiting grooves. The driver board has at least one fixing hole. The luminaire also includes an elastic positioning member corresponding to the number of fixing holes. The upper end of the elastic positioning member passes through the fixing hole, and the lower end elastically abuts against the bottom wall of the second chamber, so as to press and fix the driver board in a predetermined position in the guide limiting groove under the action of elastic force and friction.

[0005] The drive plate is pressed against the guide limiting groove by the axial elastic force generated when the elastic positioning component is compressed. At the same time, the friction between the positioning component and the fixing hole restricts the horizontal movement of the drive plate. In this way, the drive plate is reliably fixed and can be directly pulled out horizontally when needed, without the need for tools or damage to any connecting parts. The disassembly process is simple and quick, completely avoiding the drawbacks of difficult separation after adhesive hardening and the stripping or loosening of screws. Moreover, the elastic positioning component has a certain compressive deformation capacity. Even if there are deviations in the manufacturing dimensions of the drive plate or housing, it can maintain sufficient clamping force through adaptive adjustment, preventing the assembly from being too tight or too loose due to tolerance accumulation, effectively improving the assembly yield and adaptability of the product.

[0006] In some embodiments, the upper end of the elastic positioning member is provided with a limiting groove for the edge of the fixing hole to be inserted, and its lower end extends radially outward to form an abutment surface.

[0007] This improvement ensures that the wall of the fixing hole fits precisely into the limiting groove, enhancing the axial connection between the positioning component and the drive plate. Simultaneously, the enlarged contact surface at the lower end increases the contact area with the bottom wall of the housing, resulting in a more uniform distribution of elastic force and preventing localized stress concentration. This structure further improves the drive plate's resistance to displacement under vibration, ensuring good contact stability even after long-term use.

[0008] In some embodiments, there are two fixing holes, which are respectively opened at both ends of the drive plate.

[0009] By adopting a double-hole, double-positioning component structure, both ends of the drive plate are subjected to independent elastic clamping. This effectively avoids the situation in single-hole designs where only one end is fixed by the positioning component while the other end is unrestrained, leading to the suspended end shifting or deviating to one side relative to the fixed end during vibration or tilting. Simultaneous clamping at both ends ensures a tighter fit between the drive plate and the guide limiting groove, eliminating potential play caused by single-sided fixing. This significantly improves the stability and vibration resistance of the drive plate within the luminaire, ensuring the stability of the electrical connection during long-term use or transportation.

[0010] In some embodiments, two first limiting strips extending along their length are symmetrically arranged on the bottom wall of the second chamber; two second limiting strips extending along their length are symmetrically arranged on the side wall of the second chamber, wherein a guide limiting groove is formed between the first limiting strip and the second limiting strip arranged on the same side.

[0011] The first limiting strip supports both sides of the drive board from below, while the second limiting strip presses down on both sides of the drive board from above. Together, they form a limiting groove similar to a guide rail, constraining the drive board in both vertical and horizontal directions. Combined with the longitudinal clamping of the elastic positioning component, the drive board is horizontally constrained. All six degrees of freedom of the drive board are fully controlled, preventing displacement or shaking even during frequent switching of the light fixture or when subjected to external impacts. This ensures a durable and stable connection between the light source board and the drive board, while also providing a smooth guide for the insertion and removal of the drive board.

[0012] In some embodiments, the resilient positioning element is made of rubber material.

[0013] Rubber material possesses excellent elasticity and wear resistance, providing an appropriate coefficient of friction and quickly recovering its shape after repeated disassembly and assembly. It is also resistant to aging, hardening, or cracking with long-term use, ensuring the durability of the fixing effect. Furthermore, rubber is inexpensive, easy to process, and suitable for mass production. Its soft texture will not scratch the drive board or housing surface, further protecting internal components. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the lamp with a quick-change driver board according to the present invention; Figure 2 This is a state diagram of the lamp disassembly plug with quick-replacement driver board according to this utility model. Figure 3 This is a top view of the lamp with a quick-change driver board according to this utility model; Figure 4 yes Figure 3 A cross-sectional view along the AA direction; Figure 5 yes Figure 3 Cross-sectional view along the BB direction; Figure 6 This is a schematic diagram of the housing structure in the lamp with a quick-change driver board according to the present invention; Figure 7 This is a diagram showing the state of the driver board after the elastic positioning component is removed in the lamp with a quick-change driver board according to this utility model. Figure 8 This is a schematic diagram of the elastic positioning component in the lamp with a quick-change driver board according to this utility model.

[0015] Figure label: 1. Housing; 101. First chamber; 102. Second chamber; 103. Guide limiting groove; 104. First limiting strip; 105. Second limiting strip; 2. Light source board; 3. Drive board; 301. Fixing hole; 4. Elastic positioning element; 401. Limiting groove; 402. Abutment surface; 5. Plug. Detailed Implementation

[0016] 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.

[0017] This utility model provides a lamp with a quickly replaceable driver board, mainly composed of several core components: a housing 1, a light source board 2, a driver board 3, and plugs 5. The interior of the housing 1 is constructed into two chambers distributed vertically. The first chamber 101, located at the bottom, is used to install the light source board 2. The installation method of the light source board 2 can be varied, such as by creating a slot within the first chamber 101. The first chamber 101 has an opening at the bottom to allow light from the light source board 2 to shine outwards; a light-transmitting cover is provided below the light source board 2. The second chamber 102, located at the top, is used to accommodate the driver board 3. A wire hole is provided between the first chamber 101 and the second chamber 102 for wires to pass through, enabling electrical connection between the driver board 3 and the light source board 2. Two plugs 5 are respectively located at the openings at both ends of the housing 1 to seal the ends of the housing 1. Furthermore, the plugs 5 are electrically connected to the driver board 3 to introduce external mains power into the lamp, providing operating power to the driver board 3.

[0018] Specifically, two guide and limiting grooves 103 are symmetrically arranged along the length of the inner wall of the second chamber 102. The two side edges of the drive plate 3 are inserted into the guide and limiting grooves 103, thereby providing initial positioning and constraint for the drive plate 3. The drive plate 3 has at least one fixing hole 301, and the lamp is also equipped with an elastic positioning member 4 corresponding to the number of fixing holes 301. The upper end of the elastic positioning member 4 passes through the fixing hole 301, and the lower end elastically abuts against the bottom wall of the second chamber 102. In this way, the drive plate 3 can be pressed and fixed in a predetermined position in the guide and limiting groove 103 by the elastic force of the elastic positioning member 4 itself and the friction generated between it and the fixing hole 301.

[0019] Specifically, the elastic positioning element 4 generates axial elastic force when compressed during installation. This elastic force presses the drive plate 3 firmly onto the guide limiting groove 103, reliably fixing the drive plate 3 in the vertical direction. Simultaneously, after the elastic positioning element 4 penetrates the fixing hole 301, it forms friction with the bottom wall of the second chamber 102, effectively limiting the horizontal movement of the drive plate 3. When the drive plate 3 needs to be replaced or repaired, simply remove the plug 5 at one end of the housing 1, then disconnect the wires between the light source board 2 and the drive plate 3, and then pull the drive plate 3 outwards horizontally with slight force. The entire process requires no tools and does not damage any connecting parts, achieving truly rapid and non-destructive disassembly and assembly.

[0020] It is worth noting that, because the elastic positioning element 4 itself has a certain compressive deformation capability, even if there are certain deviations in the manufacturing dimensions of the drive plate 3 or the housing 1, the elastic positioning element 4 can maintain sufficient clamping force through adaptive adjustment, and will not cause the assembly to be too tight or too loose due to the accumulation of tolerances. This greatly improves the assembly yield and adaptability of the product. Preferably, the elastic positioning element 4 can be made of rubber material, or silicone or other polymer materials with good elasticity can be selected according to actual needs.

[0021] Furthermore, the upper end of the elastic positioning member 4 is a cylindrical structure with a limiting groove 401 formed around it. The function of the limiting groove 401 is to allow the edge of the fixing hole 301 to be embedded therein. That is, when the upper end of the elastic positioning member 4 passes through the fixing hole 301 of the drive plate 3, the wall of the fixing hole 301 can be precisely locked into the limiting groove 401, thereby achieving axial locking between the elastic positioning member 4 and the drive plate 3. At the same time, the lower end of the elastic positioning member 4 protrudes radially outward to form an abutment surface 402, which increases the contact area between the lower end of the elastic positioning member 4 and the bottom wall of the second chamber 102. In this way, the elastic force generated when the elastic positioning member 4 is compressed can be more evenly distributed on the bottom wall through the enlarged abutment surface 402, avoiding the problem of local stress concentration caused by insufficient contact area. This structural design not only enhances the connection reliability between the elastic positioning element 4 and the drive plate 3, but more importantly, when the lamp is subjected to vibration or impact, the limiting groove 401 can effectively prevent the drive plate 3 from dislodging from the elastic positioning element 4, thereby significantly improving the drive plate 3's anti-displacement capability under vibration environment, allowing the lamp to maintain good contact stability even after long-term use. Preferably, the depth of the limiting groove 401 can be adapted and adjusted according to the thickness of the drive plate 3, generally to be able to fully accommodate the edge of the fixing hole 301; the outer diameter of the abutment surface 402 can be reasonably designed according to the available space of the bottom wall of the second chamber 102, minimizing the space occupied while ensuring sufficient contact area.

[0022] Specifically, the drive plate 3 has two fixing holes 301, located at both ends of the drive plate 3. This symmetrical arrangement of two holes and two positioning elements ensures that each end of the drive plate 3 is subjected to independent elastic clamping. Compared to the single-hole solution, where only one end of the drive plate 3 is fixed by the elastic positioning element 4 while the other end is unrestrained, the double-hole solution effectively prevents the suspended end from shifting or deviating to one side relative to the fixed end when the lamp vibrates or tilts. The simultaneous clamping action at both ends ensures a tighter fit between the drive plate 3 and the guide limiting groove 103, eliminating potential play that might result from single-sided fixing. As a result, the stability and vibration resistance of the drive plate 3 installed inside the lamp are significantly improved. Even if the lamp experiences bumps during transportation or is frequently switched on and off during long-term use, the electrical connection between the drive plate 3 and the light source plate 2 remains stable.

[0023] Preferably, the two fixing holes 301 can be positioned at both ends of the drive board 3 near the edge along its length. This facilitates quick and accurate positioning during assembly and ensures that the point of application of the clamping force is as far away from the center of the drive board 3 as possible, thus achieving better force balance without damaging the circuit structure on the drive board 3. Of course, if space permits, fixing holes 301 can also be provided at the four corners of the drive board 3, along with a corresponding number of elastic positioning elements 4, to achieve a more uniform clamping effect.

[0024] Based on this, two first limiting strips 104 extending along their length are symmetrically arranged on the bottom wall of the second chamber 102; two second limiting strips 105 extending along their length are symmetrically arranged at a predetermined height on the side wall of the second chamber 102; wherein, a guide limiting groove 103 is formed between the first limiting strips 104 and the second limiting strips 105 arranged on the same side. The first limiting strips 104 are used to support the two sides of the lower surface of the drive plate 3 from below, and the second limiting strips 105 are used to abut against the two sides of the upper surface of the drive plate 3 from above. The drive plate 3 is constrained in both the vertical and horizontal directions. That is, the first limiting strips 104 restrict the degree of freedom of the drive plate 3 to move downward, the second limiting strips 105 restrict the degree of freedom of the drive plate 3 to move upward, and the side wall of the second chamber 102 restricts the displacement of the drive plate 3 in the horizontal direction. Based on this, in conjunction with the longitudinal pressing of the elastic positioning member 4 to provide horizontal constraint on the drive plate 3, the six degrees of freedom of the drive plate 3 are completely controlled. In this way, even under frequent switching of the lights or impact from external forces, the drive board 3 will not shift or wobble, thus ensuring the long-term stability of the connection between the light source board 2 and the drive board 3. At the same time, this guide rail-like structure also provides a smooth guiding effect for the insertion and removal of the drive board 3. When the operator inserts the drive board 3 into or removes it from the second chamber 102, the first limiting strip 104 and the second limiting strip 105 can guide the drive board 3 to move along the correct path, avoiding jamming or damage caused by insertion angle deviation.

[0025] Preferably, the first limiting strip 104 and the second limiting strip 105 can be integrally formed with the housing 1, for example, by injection molding directly onto the inner wall of the housing 1. This simplifies the production process and ensures the connection strength between the limiting strip and the housing 1. Alternatively, a split structure can be adopted, that is, the limiting strip is made separately and then fixed to the inner wall of the housing 1 by snap-fit ​​or adhesive. This method facilitates later maintenance and replacement.

[0026] Specifically, during assembly, the upper end of the elastic positioning member 4 is first inserted from bottom to top into the fixing hole 301 of the drive plate 3 until the edge of the fixing hole 301 is embedded in the limiting groove 401, so that the elastic positioning member 4 and the drive plate 3 are combined into a pre-assembled component. Then, the two side edges of the pre-assembled component are aligned with the two guide limiting grooves 103 in the second chamber 102, and the drive plate 3 is horizontally pushed into the second chamber 102 along the length direction of the guide limiting grooves 103. After being pushed into place, the elastic positioning member 4 presses and fixes the edge of the drive plate 3 in the guide limiting grooves 103 under its own elastic restoring force, thus completing the assembly.

[0027] It should be noted that during the process of pushing in the pre-assembled component, the coefficient of sliding friction of the rubber is lower than the coefficient of static friction, resulting in less resistance during pushing. Furthermore, the guide and limiting groove 103 provides horizontal guidance, and the operator only needs to apply a moderate pushing force to overcome the friction and smoothly push the pre-assembled component into place. After it is in place, the elastic force continues to act, and reliable locking is achieved by relying on static friction.

[0028] Furthermore, the elastic positioning element 4 is preferably made of rubber. Rubber itself possesses good elasticity and wear resistance, providing an appropriate coefficient of friction to ensure the drive plate 3 does not move arbitrarily in the horizontal direction. It also quickly recovers its deformation after repeated disassembly and assembly, and is not prone to aging, hardening, or cracking over long-term use, thus ensuring the durability of the fixing effect. In addition, rubber is inexpensive and easy to process, making it suitable for mass production, which is significant for reducing the overall manufacturing cost of the lamp.

[0029] It is worth noting that the soft texture of rubber has an additional advantage—it will not scratch the surface of the drive plate 3 or the inner wall of the housing 1, which is especially important for protecting internal components. Preferably, in addition to natural rubber, synthetic rubber materials such as nitrile rubber, silicone rubber, or EPDM rubber can also be used. These materials each have advantages in terms of oil resistance, temperature resistance, and aging resistance, and can be selected according to the actual operating environment of the lamp. In terms of the specific shape design of the elastic positioning element 4, in addition to the aforementioned structure with a limiting groove 401 and abutment surface 402, different shapes such as cylindrical, conical, or pagoda shapes can also be considered, as long as they can achieve the function of penetrating the fixing hole 301 and elastically abutting against the bottom wall. In terms of material selection, the elastic positioning element 4 needs to have sufficient axial stiffness so that it can maintain a stable posture when pushed in and the lower end will not fold or curl.

[0030] 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 light fixture with a quick-change driver board, characterized by, include: The lamp includes a housing (1), a light source plate (2), and a drive plate (3) electrically connected to the light source plate (2). The housing (1) has an axially distributed first chamber (101) and a second chamber (102). The inner wall of the second chamber (102) has two symmetrical guide limiting grooves (103) along its length. The light source plate (2) is installed in the first chamber (101). The drive plate (3) is disposed in the second chamber (102) and its two sides are inserted into the guide limiting grooves (103). The drive plate (3) has at least one fixing hole (301). The lamp also includes an elastic positioning member (4) corresponding to the number of fixing holes (301). The upper end of the elastic positioning member (4) is inserted into the fixing hole (301), and the lower end is elastically abutted against the bottom wall of the second chamber (102) so that the drive plate (3) is pressed and fixed in a predetermined position in the guide limiting groove (103) under the action of elastic force and friction.

2. The fast changeable driver board of the lamp according to claim 1, characterized in that, The upper end of the elastic positioning member (4) is provided with a limiting groove (401) for the edge of the fixing hole (301) to be inserted, and its lower end extends radially outward to form an abutment surface (402).

3. The fast changeable driver board of the lamp according to claim 1, characterized in that, There are two fixing holes (301), which are respectively opened at both ends of the drive plate (3).

4. The fast changeable driver board of the lamp according to claim 1, characterized in that, Two first limiting strips (104) extending along their length direction are symmetrically arranged on the bottom wall of the second chamber (102); two second limiting strips (105) extending along their length direction are symmetrically arranged on the side wall of the second chamber (102), wherein a guide limiting groove (103) is formed between the first limiting strip (104) and the second limiting strip (105) arranged on the same side.

5. The fast changeable driver board of the lamp according to claim 1, characterized in that, The elastic positioning element (4) is made of rubber material.

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