High-temperature-resistant neon lamp strip for sauna room

Abstract

The utility model relates to a kind of neon lamp strip for high-temperature sauna room, including transparent soft silicone outer layer, and the heat-conducting soft glue substrate in the installation inner cavity of soft silicone outer layer;The upper surface of heat-conducting soft glue substrate is equipped with flexible lamp pearl circuit board;The bottom wall body of soft silicone outer layer is sequentially equipped with multiple filling cavities downwards, and heat-conducting soft glue base material is filled in filling cavity;The thickness of the wall body of filling cavity upper and lower sides is between 0.05-0.15mm;The scheme provides waterproof function by soft silicone outer layer, and, compared with traditional lamp strip, heat-conducting soft glue base material and heat-conducting soft glue substrate can also be matched to transfer the high-temperature heat generated by lamp pearl to the wall surface installed, to reduce the closeness degree of lamp pearl operating temperature and limit value, and then reduce the risk of lamp pearl burning core.

Description

Technical Field

[0001] This utility model relates to the field of light strip technology, and in particular to a high-temperature resistant neon light strip for sauna rooms. Background Technology

[0002] Since its commercialization in the 1960s, LED lighting technology has evolved from indicator lights to general lighting. The invention of blue LEDs in 1994 laid the foundation for full-color displays and white LEDs, while the rapid improvement in LED luminous efficacy after 2000 led to their widespread application in landscape lighting.

[0003] In daily life, humid saunas are a typical example of high-temperature and high-humidity environments, with internal temperatures typically maintained between 40-60℃ and relative humidity approaching 100%. This extreme environment presents a dual challenge to lighting fixtures: firstly, continuous moisture penetration accelerates circuit corrosion, causing the waterproof sealing layer of traditional LED strips to age and fail, especially for conventional lighting fixtures with iron or aluminum casings. For this specific situation, silicone LED strips with excellent waterproof properties are usually sufficient to meet the requirements.

[0004] However, on the other hand, due to poor air circulation in enclosed spaces, the junction temperature of LED chips (above 90 degrees Celsius) often approaches the critical value (generally around 110 degrees Celsius), easily leading to light decay or even chip burning. Since the waterproofing of the light strip is achieved directly through its outer layer of integrally molded silicone, and the silicone at the bottom of the strip is also quite thick, this directly prevents the strip from transferring its internal high temperature to the mounting surface. This not only shortens the lifespan of the lamp but also poses a safety hazard of electrical leakage. Therefore, a breakthrough through structural innovation is urgently needed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a high-temperature resistant neon light strip for sauna rooms, which can effectively solve the aforementioned problems.

[0006] To achieve the above requirements, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] A high-temperature resistant neon light strip for sauna rooms is provided, comprising a transparent soft silicone outer layer and a thermally conductive soft silicone substrate disposed in the mounting cavity of the soft silicone outer layer; the upper surface of the thermally conductive soft silicone substrate is provided with a flexible LED circuit board; the bottom wall of the soft silicone outer layer is provided with a plurality of filling cavities arranged downwards, the filling cavities being filled with thermally conductive soft silicone substrate; the wall thickness on the upper and lower sides of the filling cavity is between 0.05-0.15mm.

[0008] The neon light strip for high-temperature sauna rooms described in this utility model has an upper end of the uppermost filling cavity among the plurality of filling cavities directly connected to the mounting cavity. When assembled in place, the lower surface of the thermally conductive soft rubber substrate and the upper surface of the adjacent thermally conductive soft rubber substrate are tightly bonded together.

[0009] The high-temperature resistant neon light strip for sauna rooms described in this utility model has a stepped lower surface edge with an upward indentation in the lower edge of the lowest of the plurality of thermally conductive soft rubber substrates.

[0010] The high-temperature resistant neon light strip for sauna rooms described in this utility model has a downward-facing first recessed portion in the middle of the thermally conductive soft rubber substrate, the LED circuit board is disposed on the first recessed portion, and the top surface of the mounting cavity has an upward-facing second recessed portion located above the first recessed portion.

[0011] The neon light strip for high-temperature sauna rooms described in this utility model has a width greater than that of the second recess. When assembled, the second recess abuts against the upper surface of the first recess along both ends of its width.

[0012] The high-temperature resistant neon light strip for sauna rooms described in this utility model has a downward-curving roll portion at both ends of the thermally conductive soft rubber substrate along its width direction, and multiple conductive wires are arranged in the inner cavity of the roll portion along its length direction.

[0013] The neon light strip for high-temperature sauna rooms described in this utility model has a first extension pin at each end of the lamp bead circuit board along its width direction, and the first extension pin extends circumferentially along the outer peripheral sidewall of the roll portion to its inner peripheral sidewall.

[0014] The high-temperature resistant neon light strip for sauna rooms of this utility model has a second extension pin at each end of the lamp bead circuit board along its width direction, and a through hole communicating with the inner cavity of the first recessed portion corresponding to the roll portion. The second extension pin extends to the inner wall of the inner cavity of the roll portion through the through hole.

[0015] The beneficial effects of this utility model are as follows: after the light strip is installed, it can provide excellent waterproof and protective functions through the soft silicone outer layer; moreover, compared with traditional light strips, the high temperature heat generated by the LED beads can be transferred to the wall surface where it is installed through the cooperation of the thermally conductive soft silicone substrate and the thermally conductive soft silicone base plate, so as to reduce the degree of proximity of the working temperature of the LED beads to the limit value, thereby reducing the risk of LED beads burning out. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional view of the present invention. Detailed Implementation

[0018] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0021] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] The preferred embodiment of this utility model is a high-temperature resistant neon light strip for sauna rooms, such as... Figure 1 As shown, the light strip includes a transparent soft silicone outer layer 10, which is made of platinum-cured liquid silicone rubber with high transparency, high resistance to yellowing, and high temperature resistance. It exhibits excellent resistance to yellowing and can maintain transparency for a long time in high-temperature and high-humidity environments, ensuring luminous efficacy. Furthermore, its temperature resistance range of -60℃ to 250℃ fully meets the requirements of humid sauna environments (typically 70-90℃). Specifically, as a standard industry technology, the formulation of the soft silicone outer layer 10 is generally as follows:

[0024] formula

[0025] Base material: vinyl polydimethylsiloxane; crosslinking agent: hydrogen-containing silicone oil; catalyst: platinum catalyst; additives: hydrolysis resistant agent (such as zirconium carbonate, cerium oxide, etc., to further improve long-term stability in high-temperature steam environment), UV stabilizer (although there is no strong UV in sauna room, this additive can also help improve heat oxidation resistance), structure control agent (to ensure the integrity of the ultra-thin wall of the filling cavity during the molding process).

[0026] The manufacturing process generally uses conventional liquid silicone injection molding.

[0027] Basic process: The liquid silicone of components A and B are mixed in a precision injection molding machine and injected into a pre-designed complex mold containing a core (for forming the mounting cavity 101 and the filling cavity) through a mold gating system.

[0028] Key process parameters during molding: mold temperature: 120℃-150℃; injection pressure: medium to low pressure to prevent the mold core from breaking or causing excessive flash; vulcanization time: adjusted according to the product wall thickness to ensure sufficient vulcanization.

[0029] Furthermore, the light strip of this solution also includes a thermally conductive soft silicone substrate 20 disposed in the mounting cavity 101 of the soft silicone outer layer 10. It is made of a highly thermally conductive, highly insulating, and flexible plastic thermally conductive silicone pad material. Its formula mainly consists of a base rubber: vinyl polydimethylsiloxane / methyl vinyl silicone rubber (raw rubber); a thermally conductive filler: a compound system of aluminum nitride, aluminum oxide, and boron nitride; boron nitride: high thermal conductivity (up to 30W / mK, good insulation, and excellent thermal conductivity); aluminum nitride / alumina compound: balancing thermal conductivity (5-8W / mK) and cost; and the crosslinking agent and catalyst are the same as those of the soft silicone outer layer 10.

[0030] The thermally conductive soft rubber substrate 20 can be later assembled with the soft silicone outer layer 10 through an extrusion machine for outer packaging.

[0031] Furthermore, a flexible LED circuit board 30 is provided on the upper surface of the thermally conductive soft silicone substrate 20; multiple filling cavities 40 are arranged downwards in the bottom wall of the soft silicone outer layer 10, and the filling cavities 40 are filled with thermally conductive soft silicone substrate 50; the thickness of the upper and lower walls 41 of the filling cavity 40 is between 0.05-0.15mm. In practice, this thickness range was determined by simulating three sets of silicone samples (thicknesses of 0.05mm, 0.10mm, and 0.15mm respectively). The sample area was uniformly 50mm (width) * 30mm (thickness). In the specific simulation, a constant temperature heating plate simulating an LED bead (set to 100℃) was attached to one side of the sample, and a water-cooled plate (simulating wall heat dissipation, set to 60℃) was attached to the other side to ensure that heat can only be conducted in one direction; during the process, a heat flux meter was used to measure the heat flux density (W / m³) passing through the sample. 2 The thermal resistance of the sample was calculated as R = ΔT / (q*A), where R represents the thermal resistance (K / W), ΔT represents the temperature difference between the two sides of the sample (K), and q represents the heat flux density (W / m³). 2 A represents the area (m²) 2 The verification results are shown in the table below:

[0032]

[0033] In addition, depending on the specific requirements, we can choose to add a small amount (1-3%) of nano-montmorillonite or carbon nanotubes to the formulation of the soft silicone outer layer 10, in addition to the basic silica. These nanomaterials can form a network structure in the silicone matrix, which greatly improves the tensile strength, tear strength and fatigue resistance of the material without significantly affecting its transparency and flexibility, thereby effectively preventing bending cracks.

[0034] The thermally conductive soft silicone substrate 50 in the filling cavity 40 is generally treated by a potting process: after the soft silicone outer layer 10 is formed and demolded, the uncured liquid thermally conductive silicone is injected into each filling cavity 40 through the reserved injection port, and then subjected to secondary heating and curing to form a tight bond with the silicone outer layer, which can ensure that the filling cavity 40 is completely filled without air bubbles.

[0035] After the light strip is installed, the soft silicone outer layer 10 provides excellent waterproof and protective functions. Moreover, compared with traditional light strips, the combination of the thermally conductive soft silicone substrate 50 and the thermally conductive soft silicone base plate 20 can transfer the higher temperature heat generated by the LED beads to the wall / ground where they are installed, thereby reducing the proximity of the LED beads' operating temperature to the limit value and thus reducing the risk of the LED beads burning out.

[0036] In this embodiment, the uppermost filling cavity 40 among the multiple filling cavities 40 is directly connected to the mounting cavity 101. When assembled in place, the lower surface of the thermally conductive soft rubber substrate 20 and the upper surface of the adjacent thermally conductive soft rubber substrate 50 are tightly attached to ensure timely absorption of the high temperature generated by the LED beads.

[0037] In this embodiment, the lower surface edge of the lowest thermally conductive soft adhesive substrate 50 among the plurality of thermally conductive soft adhesive substrates 50 is recessed upwards with a step 51, that is, two steps 51 are set at the left and right ends, so that the two sides of the lowest wall 41 have a buffer zone with gradually decreasing thickness, providing a structural component that is easier to deform for the vertical movement and deformation of the wall 41.

[0038] In this embodiment, the thermally conductive soft adhesive substrate 20 has a downward-facing first recess 21 in the middle, the LED circuit board 30 is disposed on the first recess 21, and the top surface of the mounting cavity 101 is located above the first recess 21 and has an upward-facing second recess 102. Specifically, the width of the first recess 21 is greater than the width of the second recess 102. When assembled, the second recess 102 abuts against the upper surface of the first recess 21 along both ends of its width to increase the structural support of the mounting cavity 101.

[0039] In this embodiment, the thermally conductive soft rubber substrate 20 has a downward-curving roll portion 22 at both ends along its width direction. Multiple conductive wires 60 are provided in the inner cavity of the roll portion 22 along its length direction and completely fill the inner cavity, so as to facilitate the use of connecting pins inserted into the roll portion 22 to realize the electrical connection of the two light strips.

[0040] In this embodiment, the LED circuit board 30 is provided with a first extension pin (not shown) at each end along its width direction. Specifically, multiple first extension pins are provided on both sides. The first extension pins extend circumferentially from the outer peripheral sidewall of the roll portion 22 to its inner peripheral sidewall, so as to connect the wires in the roll portion 22 to the corresponding positive and negative terminals of the circuit board, so that two LED strips can be spliced ​​by cutting at any position. The manufacturing process of the thermally conductive soft rubber substrate 20 is generally molding: the mixed thermally conductive silicone material is placed in a precision mold, formed into a sheet under high temperature and high pressure, and the first recessed portion 21 and the roll portion 22 and other structures are directly molded out.

[0041] Example 2

[0042] This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that the LED circuit board 30 has a second extension pin (not shown) at each end along its width direction, and the first recess 21 has a through hole (not shown) corresponding to the winding part 22 and communicating with its inner cavity. The second extension pin extends to the inner wall of the inner cavity of the winding part 22 through the through hole. Compared with the method of extending from the outer wall, the use of through hole can reduce the length of the second extension pin.

[0043] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A high-temperature resistant neon light strip for sauna rooms, characterized in that, It includes a transparent soft silicone outer layer and a thermally conductive soft silicone substrate disposed in the mounting cavity of the soft silicone outer layer; the upper surface of the thermally conductive soft silicone substrate is provided with a flexible LED circuit board; the bottom wall of the soft silicone outer layer is provided with a plurality of filling cavities arranged downwards, and the filling cavities are filled with thermally conductive soft silicone substrate; the wall thickness on the upper and lower sides of the filling cavity is between 0.05-0.15mm.

2. The high-temperature resistant neon light strip for sauna rooms according to claim 1, characterized in that, The uppermost of the multiple filling cavities is directly connected to the mounting cavity. When assembled, the lower surface of the thermally conductive soft rubber substrate and the upper surface of the adjacent thermally conductive soft rubber substrate are tightly bonded together.

3. The high-temperature resistant neon light strip for sauna rooms according to claim 2, characterized in that, The lower surface edge of the lowest thermally conductive soft adhesive substrate among the plurality of such substrates is recessed upwards with a step.

4. The high-temperature resistant neon light strip for sauna rooms according to claim 1, characterized in that, The thermally conductive soft adhesive substrate has a downward-facing first recess in the middle, the LED circuit board is disposed on the first recess, and the top surface of the mounting cavity has an upward-facing second recess located above the first recess.

5. The high-temperature resistant neon light strip for sauna rooms according to claim 4, characterized in that, The width of the first recess is greater than the width of the second recess. When assembled, the second recess abuts against the upper surface of the first recess along both ends of its width.

6. The high-temperature resistant neon light strip for sauna rooms according to claim 4, characterized in that, The thermally conductive soft rubber substrate has downward-curved roll portions at both ends along its width direction, and multiple conductive wires are arranged in the inner cavity of the roll portions along its length direction.

7. The high-temperature resistant neon light strip for sauna rooms according to claim 6, characterized in that, The LED circuit board has a first extension pin at each end along its width direction, and the first extension pin extends circumferentially along the outer peripheral sidewall of the roll portion to its inner peripheral sidewall.

8. The high-temperature resistant neon light strip for sauna rooms according to claim 6, characterized in that, The LED circuit board has a second extension pin at each end along its width direction. The first recessed portion has a through hole corresponding to the roll portion and communicating with its inner cavity. The second extension pin extends to the inner wall of the roll portion through the through hole.

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