Fireproof down lamp structure

Abstract

The utility model discloses a fireproof down lamp structure which comprises a lamp cup, and the opening end of the lamp cup is provided with a lens and a silica gel ring arranged on the periphery of the lens in a sleeved mode. The reflection cup and the lamp panel are arranged in the lamp cup; the base is connected with the bottom end of the lamp cup; the rear cover is matched with the base to form a cavity for accommodating electrical elements, and a PCB (Printed Circuit Board) is arranged in the cavity; the fireproof expansion foam is attached to the lower portion of the lamp cup; and the fixing screw penetrates through the lamp panel and the lamp cup. According to the whole structure, the lamp cup, the lens, the silica gel ring, the reflection cup, the lamp panel, the base and the rear cover form an integrated assembly structure, rapid installation is facilitated, the problems that a traditional down lamp is insufficient in fireproof performance, poor in heat dissipation effect, poor in waterproof sealing performance, complex in installation and the like are solved, meanwhile, the color temperature adjusting function is achieved, the IP65 protection grade requirement is met, and the service life is prolonged. The fireproof performance and the practicability are excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting equipment, in particular to a fireproof downlight structure. Background Art

[0002] Downlights are a common type of recessed lighting fixture, widely used in commercial and residential environments. Traditional downlights have design challenges, such as insufficient fire resistance, poor heat dissipation, and complex installation. With rising building safety standards and increasing user demands for lighting quality, developing downlight structures that offer superior fire resistance, heat dissipation, and ease of installation is becoming increasingly important.

[0003] Existing downlights often suffer from the following issues: insufficient fire resistance, which can easily pose a safety hazard in high-temperature or fire situations; poor heat dissipation, which affects the lifespan and lighting performance of the LED light source; and insufficient waterproof sealing, which can easily lead to water ingress into the lamp, shortening its service life. For example, the patent entitled "A Fireproof Downlight Structure," with publication number CN209341052U, utilizes a plastic-coated steel lamp body composed of a plastic lamp body and a steel lamp body. This facilitates assembly, provides good integrity, and reduces material and production costs. The plastic-coated steel lamp body has one or more brims, which not only ensure the lighting and fireproofing performance of the downlight structure but also improves heat dissipation and electrical safety. However, the installation process is complex, making maintenance and replacement inconvenient, and the system lacks flexible adjustment functions, such as color temperature adjustment. Therefore, there is an urgent need to develop a new fireproof downlight structure to address the aforementioned issues. Utility Model Content

[0004] The purpose of this utility model is to provide a fireproof downlight structure to solve the problems existing in the prior art. This structure has good fireproof performance, heat dissipation effect and waterproof sealing, and is also easy to install and maintain. To achieve the above objectives, this utility model adopts the following technical solutions:

[0005] A fireproof downlight structure, comprising:

[0006] The lamp cup has an open end provided with a lens and a silicone ring sleeved around the lens;

[0007] The reflector cup and the light board are placed inside the light cup;

[0008] A base connected to the bottom end of the lamp cup;

[0009] A rear cover cooperates with the base to form a cavity for accommodating electrical components, wherein a PCB is arranged in the cavity;

[0010] Fireproof expansion foam, fitted to the bottom of the lamp cup;

[0011] A fixing screw passes through the lamp board and the lamp cup.

[0012] Furthermore, the lamp cup is formed by a stamping integral molding process, and the lamp cup contacts the back cover to form a fixed structure.

[0013] Furthermore, the depth of the cavity of the lamp cup matches the height of the back cover.

[0014] Furthermore, the lamp board is an aluminum substrate, and a first insulating gasket is provided at the bottom of the lamp board; a second insulating gasket is provided under the base; the first insulating gasket and the second insulating gasket are located at the two ends where the lamp board and the base are in contact.

[0015] Furthermore, the base is provided with a supporting structure protruding toward the interior of the lamp cup, and the supporting structure is in direct contact with the lamp board to form a heat dissipation channel.

[0016] Furthermore, the back cover is provided with a wire management groove for fixing and guiding the power cord so that the power cord is kept out to the side.

[0017] Furthermore, a color adjustment switch is provided on the back cover for adjusting the color temperature of the lamp.

[0018] Furthermore, a snap-fit structure is provided in the back cover, and the PCB is fixed on the snap-fit structure.

[0019] Furthermore, springs are provided on both sides of the lamp cup for fixing the downlight in the mounting hole.

[0020] Furthermore, the radius of the fireproof expansion foam is the same as the radius of the upper end of the lamp cup.

[0021] Compared with the prior art, the beneficial effects of the present invention include:

[0022] The use of fire-resistant expanding foam and an integrated design improve the fire resistance of the downlight; the support structure on the base and the design of the aluminum base plate improve the heat dissipation effect; the close fit of the lens, silicone ring, reflector cup and light board improves the waterproof sealing performance; the integrated assembly structure design makes installation and maintenance more convenient; the design of the color adjustment switch adds a color temperature adjustment function, which improves the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an exploded view of the fireproof downlight of the present invention.

[0024] Figure 2 This is a schematic diagram of the entire structure of the fireproof downlight of the present utility model.

[0025] In the picture, 1. Lens; 2. Silicone ring; 3. Reflector cup; 4. Fixing screw; 5. Light board; 6. Insulation gasket; 7. Light cup; 8. Spring; 9. Base; 10. Insulation gasket; 11. PCB; 12. Back cover; 13. Foam; 14. Power cord; 15. Color adjustment switch. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] Example 1:

[0028] like Figure 1 and Figure 2 As shown, the fireproof downlight structure provided by the present invention includes a lamp cup 7, a lens 1, a silicone ring 2, a reflector cup 3, a lamp board 5, a base 9, a back cover 12, a PCB 11, fireproof expansion foam 13 and fixing screws 4. These components are assembled in sequence from top to bottom to form a tightly integrated overall structure.

[0029] The lamp cup 7 forms the main frame of the downlight, formed from a high-strength aluminum alloy using a stamping process. A precision annular groove at the top of the lamp cup accommodates the lens 1 and silicone ring 2. Lens 1 is secured to the upper opening of the lamp cup via a snap-fit mechanism, while silicone ring 2 fits snugly between the outer edge of the lens and the inner wall of the lamp cup, forming a complete sealing system. The tight integration of these three components not only ensures excellent waterproof performance but also enhances the stability of the overall structure.

[0030] There are several spring mounting grooves evenly distributed on the outer wall of the lamp cup 7, and the springs 8 are fixed to the lamp cup through these grooves. These springs will compress when the downlight is installed, providing outward force to ensure that the downlight is firmly in place in the mounting hole.

[0031] Inside the lamp cup 7, the reflector cup 3 is fixed to the inner wall of the lamp cup through a precisely designed snap-fit structure. The shape of the reflector cup matches the inner contour of the lamp cup to ensure maximum light reflection efficiency.

[0032] The light board 5 is installed directly below the reflector cup 3, leaving an appropriate gap between the two to optimize light distribution. The light board is connected to the inner wall of the lamp cup through multiple fixing points. These fixing points also serve as heat conduction channels to improve heat dissipation efficiency.

[0033] The base 9 is tightly connected to the bottom of the lamp cup 7 via threads or a snap-fit mechanism. Multiple upwardly projecting support structures on the base directly contact the bottom of the lamp panel 5, creating multiple heat conduction paths. This design not only enhances structural strength but also significantly improves heat dissipation.

[0034] The back cover 12 and base 9 are connected using a snap-fit mechanism, forming a sealed cavity. This cavity is equipped with multiple support columns and fixing slots for mounting and securing the PCB 11. These support structures keep the PCB 11 at a distance from the back cover, ensuring good heat dissipation and electrical isolation.

[0035] The fireproof expansion foam 13 is ring-shaped and precisely embedded in the gap between the bottom of the lamp cup 7 and the back cover 12. Under normal conditions, the foam does not affect the fit between the components or the heat dissipation; but at high temperatures, it will expand rapidly, filling all possible gaps and forming an effective fire barrier.

[0036] The first insulating gasket 6 rests snugly against the bottom of the light panel 5, its shape perfectly matching the panel. It not only insulates the light but also aids in heat dissipation through its thermal conductivity. The second insulating gasket 10, positioned between the base 9 and the rear cover 12, further enhances electrical safety. These two layers of insulating gaskets precisely coordinate with other components to form a complete multi-layer insulation system.

[0037] The fixing screws 4 are the key connecting elements of the entire structure. They pass through the bottom of the light panel 5, through the base 9 and the back cover 12, firmly locking the entire structure together. The screws are carefully positioned to ensure sufficient mechanical strength without affecting light distribution and heat dissipation.

[0038] During assembly, install the components from inside to outside and from top to bottom. First, install the reflector cup 3 into the lamp cup 7, then secure the lamp board 5 in place. Next, install the base 9 and back cover 12, while also positioning the PCB 11 and fire-resistant expansion foam 13. Finally, attach the lens 1 and silicone ring 2 to the top of the lamp cup, completing the assembly process.

[0039] This modular design not only simplifies the assembly process and improves production efficiency, but also facilitates subsequent maintenance and replacement. The precise coordination between the various components ensures the stability and reliability of the overall structure, while optimizing key performance factors such as heat dissipation, waterproofing, and fire resistance.

[0040] Through this tightly integrated structural design, the fireproof downlight of the utility model effectively solves the problems of traditional downlights in fire prevention performance, heat dissipation effect, waterproof sealing performance and installation complexity while ensuring basic lighting functions, thereby improving the practicality and market competitiveness of the product.

[0041] Example 2:

[0042] like Figure 1 and Figure 2As shown, the fireproof downlight structure provided by the present invention includes a lamp cup 7, a lens 1, a silicone ring 2, a reflector cup 3, a lamp board 5, a base 9, a back cover 12, a PCB 11, fireproof expansion foam 13 and fixing screws 4. These components are assembled in sequence from top to bottom to form a tightly integrated overall structure.

[0043] The lamp cup 7 forms the main frame of the downlight, formed from a high-strength aluminum alloy using a stamping process. A precision annular groove at the top of the lamp cup accommodates the lens 1 and silicone ring 2. Lens 1 is secured to the upper opening of the lamp cup via a snap-fit mechanism, while silicone ring 2 fits snugly between the outer edge of the lens and the inner wall of the lamp cup, forming a complete sealing system. The tight integration of these three components not only ensures excellent waterproof performance but also enhances the stability of the overall structure.

[0044] The outer wall of the lamp cup 7 is evenly distributed with several spring mounting slots, through which springs 8 are secured to the lamp cup. These springs compress during installation, providing an outward force that secures the downlight in place within the mounting hole. The spring design is carefully calculated to provide sufficient holding force without damaging the mounting surface. This innovative mounting method greatly simplifies installation, eliminating the need for additional tools and making both installation and removal quick and easy.

[0045] Inside the lamp cup 7, the reflector cup 3 is secured to the inner wall of the lamp cup via a precisely designed snap-fit mechanism. The reflector cup's shape matches the internal contours of the lamp cup, ensuring maximum light reflection efficiency. Made of highly reflective material and featuring a specially treated surface, the reflectivity reaches over 95%, significantly improving light utilization. The reflector cup's shape, optimized through optical simulation, provides uniform light distribution, avoiding the hotspot issues common in traditional downlights.

[0046] The light panel 5 is mounted directly below the reflector cup 3, with a suitable gap between them to optimize light distribution. The light panel is connected to the inner wall of the reflector cup at multiple fixing points, which also serve as heat conduction channels to improve heat dissipation efficiency. The light panel utilizes a highly thermally conductive aluminum substrate, integrated with multiple high-efficiency LED light sources. The LED light sources are carefully selected for high color temperature consistency and a color rendering index (CRI) exceeding 90, providing high-quality lighting effects.

[0047] The base 9 is tightly connected to the bottom of the lamp cup 7 via threads or a snap-fit mechanism. Multiple upwardly projecting support structures on the base directly contact the bottom of the lamp panel 5, creating multiple heat conduction paths. This design not only enhances structural strength but also significantly improves heat dissipation. The base is made of a highly thermally conductive material and features heat dissipation fins on its surface, further enhancing heat dissipation. This multi-layered heat dissipation design effectively solves the common overheating problem of LED downlights and extends the life of the light source.

[0048] The back cover 12 and base 9 are connected using a snap-fit mechanism, forming a sealed cavity. This cavity is equipped with multiple support columns and fixing slots for mounting and securing the PCB 11. These support structures maintain a certain distance between the PCB 11 and the back cover, ensuring good heat dissipation and electrical isolation. The PCB 11 integrates the LED driver circuit and intelligent control module, using an efficient constant current drive solution to ensure stable operation of the LED light source. The intelligent control module supports WiFi connectivity, enabling remote control and intelligent scene settings.

[0049] The fire-resistant expansion foam 13 is ring-shaped and precisely embedded in the gap between the bottom of the lamp cup 7 and the back cover 12. Under normal conditions, the foam does not affect the fit and heat dissipation of the various components; however, at high temperatures, it expands rapidly, filling all possible gaps and forming an effective fire barrier. Made of nano-scale expanded graphite, the fire-resistant expansion foam expands rapidly at around 300°C, with an expansion rate of 20-30 times. The foam's shape is precisely designed to not affect heat dissipation under normal conditions, but at high temperatures, it quickly fills all gaps between the lamp cup and the back cover, forming an effective fire barrier. This innovative fire-resistant design significantly improves the safety of the downlight, making it particularly suitable for locations with strict fire protection requirements.

[0050] The first insulating gasket 6 rests snugly against the bottom of the light panel 5, its shape perfectly matching the panel. It not only insulates the light but also aids in heat dissipation through its thermal conductivity. The second insulating gasket 10, positioned between the base 9 and the rear cover 12, further enhances electrical safety. These two layers of insulating gaskets precisely coordinate with other components to form a complete multi-layer insulation system. Made from high-performance insulating material, the insulating gaskets offer excellent heat resistance and insulation properties, ensuring robust insulation under all operating conditions.

[0051] The fixing screws 4 are the key connecting elements of the entire structure. They pass through the bottom of the light panel 5, through the base 9 and then the back cover 12, firmly locking the entire structure together. The screws are carefully positioned to ensure sufficient mechanical strength without affecting light distribution and heat dissipation. The screws are made of a high-strength alloy with excellent corrosion resistance, ensuring that they will not loosen or rust over long-term use.

[0052] During the assembly process, the components are installed in sequence from inside to outside and from top to bottom. First, install the reflector cup 3 into the lamp cup 7, and then fix the lamp board 5 in place. Next, install the base 9 and the back cover 12, and at the same time place the PCB 11 and the fire-proof expansion foam 13 in the correct position. Finally, install the lens 1 and the silicone ring 2 on the top of the lamp cup to complete the entire assembly process. The entire assembly process adopts a modular design, and the various components use snap-on or quick-connect structures, which greatly simplifies the assembly process. The entire assembly process can be completed within 5-10 minutes, significantly improving production efficiency. At the same time, the modular design also facilitates later maintenance and replacement, improving the maintainability of the product.

[0053] This modular design not only simplifies the assembly process and improves production efficiency, but also facilitates subsequent maintenance and replacement. The precise coordination between the various components ensures the stability and reliability of the overall structure, while optimizing key performance factors such as heat dissipation, waterproofing, and fire resistance.

[0054] In the event of a fire or other high-temperature situation, the fire-resistant expansion foam 13 between the lamp cup 7 and the rear cover 12 expands rapidly, preventing the transfer of flames and heat, thereby improving the downlight's fire resistance. The performance of the fire-resistant expansion foam has been rigorously tested and proven to form an effective fire barrier in a short period of time, significantly slowing the spread of fire and buying valuable time for evacuation and fire rescue efforts.

[0055] In addition to the existing manual adjustment function, the new version of the downlight also integrates an intelligent control module and supports WiFi connection. Users can remotely control the downlight's on / off, brightness, and color temperature via a mobile app, and can also set timers and scene modes. The intelligent control system also supports voice control and is compatible with major smart home platforms, providing users with a more convenient and intelligent lighting experience. The intelligent control module adopts a low-power design, with standby power consumption of only 0.5W, which does not cause significant energy waste.

[0056] Through this tightly integrated structural design, the fire-resistant downlight of this utility model not only ensures basic lighting functions but also effectively solves the problems of traditional downlights in terms of fire resistance, heat dissipation, waterproof sealing, and installation complexity, thereby enhancing the product's practicality and market competitiveness. The addition of intelligent control further enhances the product's technological sense and user experience, making it more than just a lighting device, but also a key component of smart home systems.

[0057] Furthermore, this fire-resistant downlight boasts excellent optical performance. Lens 1 is constructed from optical-grade PMMA material with a transmittance exceeding 92%, and features anti-glare treatment to effectively reduce glare and provide a comfortable lighting environment. The LED light source on light panel 5 utilizes advanced packaging technology, achieving a luminous efficiency of over 160 lm / W, significantly reducing energy consumption. Furthermore, the LED light source's color temperature is adjustable from 2700K to 6500K, meeting the needs of various scenarios and personal preferences.

[0058] This fire-resistant downlight utilizes multiple energy-saving technologies. In addition to a highly efficient LED light source, the intelligent control system also integrates light and presence sensing. When natural light is sufficient, the downlight automatically dims or turns off, and only activates when a person enters, effectively avoiding unnecessary energy waste. These intelligent energy-saving measures can save 30%-50% of electricity compared to traditional downlights.

[0059] The fire-resistant downlight structure presented in this example offers significant advantages in fire resistance, heat dissipation, installation convenience, intelligent control, optical performance, energy conservation, and environmental protection through its innovative design. It not only meets the basic needs of modern lighting but also incorporates the concept of smart home, providing users with a safe, efficient, and intelligent lighting solution. This comprehensive, optimized design makes this product highly competitive in the fiercely competitive lighting market.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fireproof downlight structure, characterized in that: include: A lamp cup (7) having an open end provided with a lens (1) and a silicone ring (2) sleeved around the outer periphery of the lens (1); The reflective cup (3) and the lamp plate (5) are placed inside the lamp cup (7); A base (9) connected to the bottom end of the lamp cup (7); A rear cover (12) cooperates with the base (9) to form a cavity for accommodating electrical components, wherein a PCB (11) is provided in the cavity; Fireproof expansion foam (13), fitted to the bottom of the lamp cup (7); A fixing screw (4) passes through the lamp plate (5) and the lamp cup (7).

2. The fireproof downlight structure according to claim 1, characterized in that: The lamp cup (7) is formed by a stamping integral molding process, and the lamp cup (7) contacts the rear cover (12) to form a fixed structure.

3. The fireproof downlight structure according to claim 1, characterized in that: The depth of the cavity of the lamp cup (7) matches the height of the back cover (12).

4. The fireproof downlight structure according to claim 1, characterized in that: The lamp board (5) is an aluminum substrate, and a first insulating gasket (6) is provided at the bottom thereof; A second insulating gasket (10) is provided below the base (9); The first insulating gasket (6) and the second insulating gasket (10) are located at two ends of the contact between the lamp panel (5) and the base (9).

5. The fireproof downlight structure according to claim 1, characterized in that: The base (9) is provided with a support structure protruding toward the interior of the lamp cup (7); the support structure is in direct contact with the lamp board (5) to form a heat dissipation channel.

6. The fireproof downlight structure according to claim 1, characterized in that: The rear cover (12) is provided with a wire management groove for fixing and guiding the power cord (14) so that the power cord (14) is kept out to the side.

7. The fireproof downlight structure according to claim 6, characterized in that: The rear cover (12) is provided with a color adjustment switch (15).

8. The fireproof downlight structure according to claim 7, characterized in that: A buckle structure is provided in the back cover (12), and the PCB (11) is fixed on the buckle structure.

9. The fireproof downlight structure according to claim 2 or 5, characterized in that: Springs (8) are provided on both sides of the lamp cup (7).

10. The fireproof downlight structure according to claim 1, characterized in that: The radius of the fireproof expansion foam (13) is the same as the radius of the upper end of the lamp cup (7).

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