A waterproof packaging structure for outdoor LED linear lamps

Abstract

The present invention belongs to the field of LED packaging technology, and specifically relates to a waterproof packaging structure for an outdoor LED linear lamp, wherein an outer shell is arranged as a hollow structure; the hollow structure of the outer shell is connected to an inner cavity and is provided with air holes, and the hollow structure of the outer shell is filled with a water-absorbing material; and further comprises a ventilation component arranged on the outer shell, the ventilation component comprising two symmetrically arranged connecting blocks and a movable block, an opening being provided between the two connecting blocks, the opening connecting the inner cavity and the outside, the inclination angle of the edge of the connecting block being adapted to the inclination angle of the edge of the two connecting blocks, the movable block being movably engaged in the opening and closing and opening the opening by moving up and down, and then gas exchange is achieved through the opening of the opening to achieve drying of the water-absorbing material itself, thereby ensuring the water absorption capacity of the water-absorbing material and thus achieving the reuse of the water-absorbing material.

Description

Technical Field

[0001] The present invention belongs to the technical field of LED packaging, and in particular relates to a waterproof packaging structure for an outdoor LED linear lamp. Background Art

[0002] Ornamental trees in scenic areas are often illuminated using LED lighting. However, LEDs inevitably generate heat during their light-emitting process, which poses challenges to their stability and lifespan. Especially in outdoor applications, seasonal temperature fluctuations place even higher demands on the performance of LED lamps.

[0003] During cold winter months, the ambient temperature drops dramatically. The heat generated by the LED chips within LED lamps during operation causes the temperature inside the lampshade to rise relatively high. This significant temperature difference between the inside and outside of the lampshade causes condensation to form on the inner surface of the lampshade. This is when water vapor in the air condenses into water droplets when it cools. This condensation not only affects the light transmittance of the LED lamp but can also directly contact the LED chip and its circuitry, causing short circuits, corrosion, performance degradation, and even damage to the LED chip, significantly shortening the lifespan of the LED lamp.

[0004] To address this issue, the industry typically adopts two approaches: enhancing the heat dissipation performance of LED lamps, and ensuring a dry environment inside the lampshade. While optimizing LED chip layout, employing efficient heat dissipation materials, and designing a rational heat dissipation structure can effectively reduce the operating temperature of LED chips, these measures, while improving heat dissipation efficiency, also exacerbate the temperature difference between the inside and outside of the lampshade, potentially promoting the formation of condensation beads. This problem is particularly prominent in well-sealed LED lamps.

[0005] To keep the interior of the lampshade dry, some LED lamp designs incorporate absorbent materials, such as silica gel and desiccants, to absorb any condensation that may occur. While this approach alleviates the condensation problem to some extent, absorbent materials often dry slowly after absorbing water, requiring a long time to regain their absorbency. This isn't an ideal long-term solution for outdoor LED lamps, which experience frequent temperature fluctuations. Failure to promptly replace the absorbent material after saturation can increase internal humidity and cause further damage to the LEDs.

[0006] Therefore, a technology is needed to solve the above problems and quickly restore the drying ability of the water-absorbing material to ensure the water absorption performance of the water-absorbing material. Summary of the Invention

[0007] In order to solve the above problems existing in the prior art, the present invention provides a waterproof packaging structure for outdoor LED linear lamps, which solves the problem of condensation beads forming on the surface of the lamp source due to the large temperature difference between the surrounding environment and the external environment when the lamp source is working.

[0008] The object of the present invention can be achieved by the following technical solution: A waterproof packaging structure for an outdoor LED linear lamp, comprising an outer shell, a transparent lamp cover buckled at an opening of the outer shell, and a light source arranged in the inner cavity of the outer shell, wherein the outer shell is configured as a hollow structure;

[0009] The hollow structure of the outer shell is connected to the inner cavity and is provided with a vent hole, and the hollow structure of the outer shell is filled with a water-absorbing material;

[0010] The invention also includes a ventilation assembly provided on the outer shell, the ventilation assembly including two symmetrically arranged connecting blocks and a movable block, an opening between the two connecting blocks, the opening communicating with the inner cavity and the outside, the inclination angle of the edge of the connecting block being adapted to the inclination angle of the edges of the two connecting blocks, the movable block being movably engaged in the opening and closing and opening the opening by moving up and down, the two ends of the movable block being respectively connected to the two connecting blocks by springs, and when the light source is turned on, the air pressure in the inner cavity rises, pushing the movable block outward to close the opening;

[0011] When the light source is turned off, the air pressure in the inner cavity drops, and the spring rebounds to cause the movable block to contract inward to open the opening. The gas exchange between the inner cavity and the outside realizes the drying of the water-absorbing material, and the central axis of the movable block coincides with the symmetry line of the two connecting blocks.

[0012] Preferably, it also includes a waterproof shell and a translucent outer cover sleeved on the outside of the outer shell, the inner cavity of the waterproof shell realizes gas exchange with the outside through a waterproof breathable valve, and the opening of the ventilation component is connected to the inner cavity of the waterproof shell.

[0013] Preferably, the waterproof shell is a hollow structure, and the hollow structure of the waterproof shell is filled with heat-conducting material.

[0014] Preferably, the inner wall of the transparent lamp cover is provided with a reflective layer.

[0015] Preferably, the device further comprises a wire box for placing a power line, and a waterproof colloid is provided at the connection between the wire box and the outer shell.

[0016] Preferably, the hollow structure of the outer shell is also filled with dry material.

[0017] Preferably, it further comprises a waterproof coating, which is adhered to the outer surface of the waterproof shell, and the material of the waterproof shell is polycarbonate.

[0018] Preferably, retractable rubber strips are provided in both springs.

[0019] Preferably, waterproof sealing rings are provided between the edge of the waterproof housing and the light-transmitting outer cover, and between the outer housing and the light-transmitting lamp cover.

[0020] The beneficial effects of the present invention are:

[0021] By setting up a ventilation component, when the light source is on, the air pressure in the waterproof shell cavity is higher than the outside air pressure, which pushes the movable block to lock the opening to absorb and dry the inner cavity. When the light source is off, the piston returns to its original position, the opening is opened, and the inner cavity of the waterproof shell is connected to the inner cavity of the waterproof shell through the breathable valve. This way, the inner cavity of the shell is connected to the outside world, and the water-absorbing material itself is dried through gas exchange. In addition, the buffering of the waterproof shell cavity balances the temperature difference between the inner cavity of the shell and the outside world, avoiding a large temperature difference that would cause the subsequent formation of new condensation beads.

[0022] By designing the outer shell and the waterproof shell as a hollow structure, the heat dissipation speed of the lamp can be effectively improved, thereby quickly reducing the internal temperature of the lamp and ensuring the stable operation of the LED light source. In addition, heat dissipation material is provided in the outer shell. The combination of the hollow structure and the thermal conductive material reduces the thermal resistance, so that heat can be transferred more smoothly. That is, the formation of condensation beads is reduced through multi-layer conduction of the heat generated by the lamp source, avoiding the temperature difference caused by the direct collision between the temperature of the lamp source and the external temperature, and further reducing the possibility of condensation beads forming on the outer surface of the lamp source located in the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 The ventilation assembly of the present invention;

[0025] Figure 2 is a schematic cross-sectional view of the outer shell of the present invention;

[0026] Figure 3 Schematic diagram of the external structure of the present invention;

[0027] Description of main component symbols

[0028] In the figure: 1. outer shell; 2. light source; 3. vent hole; 4. waterproof shell; 5. connecting block; 6. movable block. DETAILED DESCRIPTION

[0029] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0030] See also Figure 1-Figure 3 This embodiment provides a waterproof packaging structure for an outdoor LED linear lamp, comprising an outer shell 1, a transparent lamp cover buckled at an opening of the outer shell 1, and a light source 2 disposed in an inner cavity of the outer shell 1. The outer shell 1 is configured as a hollow structure.

[0031] The outer shell 1 has a hollow structure connected to the inner cavity and is provided with a plurality of vent holes 3. The hollow structure of the outer shell 1 is filled with a water-absorbing material.

[0032] The outer shell 1 also includes a ventilation assembly, which includes two symmetrically arranged connecting blocks 5 and a movable block 6. There is an opening between the two connecting blocks 5, which connects the inner cavity and the outside world. The inclination angle of the edge of the connecting block 5 matches the inclination angle of the edge of the two connecting blocks 5. The movable block 6 is movably engaged in the opening and closes and opens the opening by moving up and down. The two ends of the movable block 6 are respectively connected to the two connecting blocks 5 by springs. When the light source 2 is turned on, the air pressure in the inner cavity rises, pushing the movable block 6 outward to close the opening. When the light source 2 is turned off, the air pressure in the inner cavity drops, and the spring rebounds, causing the movable block 6 to contract inward to open the opening. The gas exchange between the inner cavity and the outside world realizes the drying of the water-absorbing material. The central axis of the movable block 6 coincides with the symmetry line of the two connecting blocks 5.

[0033] Temperature differences are a key factor in condensation formation. When the surface temperature of a cold object (such as a cooler or window) is lower than the dew point of the surrounding air, water vapor in the air condenses into water droplets on the surface. Therefore, reducing the ambient temperature difference can reduce this temperature-induced condensation. When the lamp is turned on, the temperature of the internal light source 2 is extremely high. In cold winter weather, the temperature difference between the inner cavity of the outer shell 1 and the ambient temperature is large, making it easy for water vapor in the air to condense into water droplets on the surface of the light source 2, affecting the lighting effect and the lamp's electrical performance.

[0034] The water vapor saturation in the air is also one of the key factors that determine whether condensation beads can be formed. When the water vapor content in the air exceeds its saturation at the current temperature, the excess water vapor, combined with the temperature difference, easily condenses into condensation beads on the surface of the object with a high temperature. Therefore, in order to prevent the formation of condensation beads on the inner surface of the outer shell 1, the hollow structure of the outer shell 1 is filled with a water-absorbing material. Since the hollow structure of the outer shell 1 and the inner cavity are connected through the air vent 3, the water-absorbing material absorbs water from the inner cavity of the outer shell 1 to reduce the humidity of the air in the inner cavity. Reducing the humidity of the inner cavity means reducing the water vapor content in the air in the inner cavity, thereby reducing the possibility of condensation beads condensing on the surface of the lamp source 2 or the inner wall of the outer shell 1, thereby achieving the drying of the LED lamp source 2. The water-absorbing material is made of diatomaceous earth, bamboo charcoal or silica gel, which can achieve the water absorption function and can still achieve the water absorption function after drying again.

[0035] In the above-mentioned structural design, since the outer shell 1 and the transparent lamp cover seal the light source 2, the drying period of the water-absorbing material after absorbing water will be relatively prolonged without the help of external forces. Due to the characteristics of landscape lights, they are generally not turned on during the day. Therefore, a ventilation component is designed to achieve the purpose of drying the water-absorbing material itself by connecting it to the outside world for ventilation in dry and cold conditions. When the next water absorption is needed, the water-absorbing material can perform its function and absorb water from the inner cavity of the outer shell 1. Through the coordination of the two connecting blocks 5 and the movable block 6, when the light source 2 is turned on, the opening is closed, and the water-absorbing material dries the inner cavity of the outer shell 1. When the light source 2 is turned off, the opening is opened to achieve gas exchange, allowing the water-absorbing material to complete its own drying. Because the temperature of the light source 2 is very high, the high temperature will cause the air pressure in the relatively closed inner cavity of the outer shell 1 to rise, causing the air pressure in the inner cavity of the outer shell 1 to be higher than the external air pressure. Therefore, the higher air pressure than the external air pressure will produce a squeezing effect on the movable block 6, pushing the movable block 6 outward. Due to the structural design of the connecting block 5 and the movable block 6, that is, the inclination angles of the edges of the movable block 6 and the two connecting blocks 5 cooperate with each other, when the air pressure in the outer shell 1 is consistent with that in the outside world, the opening is open, achieving gas exchange. Of course, to ensure the sealing performance of this device, the spring and the retractable rubber strip set in the spring cooperate with each other to achieve better extension and contraction of the movable block 6. When the light source 2 is turned off, the temperature of the inner cavity of the outer shell 1 will gradually decrease to the outdoor temperature, and the air pressure in the inner cavity of the outer shell 1 will also gradually decrease to the external air pressure. The movable block 6 is no longer squeezed by the air pressure in the inner cavity of the outer shell 1. Then, due to the elastic action of the spring and the rubber strip, the movable block 6 is driven to retract, achieving the opening. The gas exchange realizes the self-drying of the water-absorbing material. The opening here does not mean completely opening, but only enables gas exchange between the inner cavity of the outer shell 1 and the outside.

[0036] As mentioned above, due to the large temperature difference and the presence of water vapor, condensation beads will be generated. In a short period of time after the LED light source 2 is turned off, even after the air pressure in the inner cavity of the outer shell 1 gradually drops to the external air pressure, the air pressure is slowly decreasing, and the thrust on the movable block 6 is decreasing. Then the gap between the movable block 6 and the two connecting blocks 5 will become larger, that is, the cold air from the outside will enter the inner cavity of the outer shell 1. In order to prevent the cold air entering the inner cavity of the outer shell 1 from causing condensation beads to be generated on the inner wall of the outer shell 1 or the light source 2 again, it also includes a waterproof shell 4 and a translucent outer cover that are sleeved on the outside of the outer shell 1. The inner cavity of the waterproof shell 4 realizes gas exchange with the outside through a waterproof breathable valve. The opening of the ventilation component is connected to the inner cavity of the waterproof shell 4, which is equivalent to the cold air from the outside first entering the inner cavity of the waterproof shell 4 and then entering the inner cavity of the outer shell 1, thereby buffering the temperature difference between the inner cavity of the outer shell 1 of the light source 2 and the outside. A water-absorbing layer is detachably provided on the waterproof breathable valve, and in order to ensure the water-absorbing effect of the water-absorbing layer, a humidity sensor is provided in the water-absorbing layer. The humidity sensor is used to monitor the humidity in the water-absorbing layer, that is, a threshold value is preset in the humidity sensor. When the detection value of the humidity sensor is greater than or equal to the threshold value, it indicates that the water-absorbing layer is about to be saturated and needs to be replaced to avoid affecting the waterproof effect of the waterproof breathable valve. At this time, the humidity sensor sends a request for the water-absorbing layer to be replaced to the operator, and the operator replaces it. The humidity sensor is electrically connected to the control terminal to send the replacement information.

[0037] Continuing from the previous embodiment, in order to promptly respond to the replacement request sent by the humidity sensor, the inner cavity of the waterproof housing 4 also includes a spare waterproof breathable valve, and the spare breathable waterproof valve is electrically connected to the control terminal. When the control terminal receives the replacement request from the humidity sensor, the control terminal starts the waterproof breathable valve and responds in a timely manner.

[0038] In one embodiment, the control terminal includes statistics on the life of the water-absorbing material, that is, recording the usage time, and replacing the water-absorbing material in time according to the usage time limit specified by the factory settings of the water-absorbing material.

[0039] To increase the heat dissipation effect, the waterproof shell 4 is a hollow structure, and the hollow structure of the waterproof shell 4 is filled with thermal conductive material. The side walls of the waterproof shell 4 are coated with a thermal conductive coating to enhance the heat dissipation effect, and heat dissipation fins are provided on the outer surface of the shell body 1.

[0040] In one embodiment, the invention further includes a translucent outer cover that is buckled onto the opening of the waterproof housing 4. Since the lamp is translucent downward, the edge of the translucent outer cover is connected to the inner wall of the waterproof housing 4. The inner cavity of the waterproof housing 4 is provided with a waterproof platform and a glue injection port for injecting waterproof glue, that is, the waterproof platform is closer to the inside than the translucent outer cover. After the glue injection is completed, the waterproof glue seals the upper part of the translucent outer cover and the inner wall of the waterproof housing 4. The waterproof ability of the lamp is enhanced by injecting waterproof glue through the glue injection port. The waterproof glue can effectively prevent external moisture from penetrating into the interior of the lamp, protecting the internal light source 2 from moisture, thereby extending the service life of the lamp. The translucent outer cover and the inner wall of the waterproof housing 4 are locked by threaded engagement. The translucent outer cover and the inner wall of the waterproof housing 4 are locked by threaded engagement. This mechanical connection method is not only simple and reliable, but also can ensure that the translucent outer cover is not easy to loosen or fall off during long-term use, thereby enhancing the overall stability of the lamp.

[0041] In one embodiment, the inner wall of the transparent lamp cover is provided with a reflective layer. This design can reflect and focus the light emitted by the lamp source 2, improve the utilization rate and uniformity of the light, and make the lighting effect of the lamp brighter and more uniform. At the same time, the reflective layer can also reduce the scattering and loss of light, thereby improving the overall lighting effect of the lamp source 2.

[0042] In one embodiment, it also includes a wire box for placing the power cord, which is used for electrical connection. This not only allows the power cord to be arranged in an orderly manner, reducing the risk of confusion and damage, but also provides additional protection for the power cord to prevent it from being corroded or mechanically damaged by water vapor in the external environment. In order to further improve the waterproof performance of the connection between the wire box and the outer shell 1, the connection between the wire box, the outer shell 1 and the waterproof shell 4 is provided with a waterproof colloid, and the waterproof colloid is a thermal expansion and contraction material. As mentioned above, a large amount of heat is generated when the lamp source 2 is working, and part of the heat will be conducted to the waterproof colloid, and the power cord itself will also generate a certain amount of heat, so the waterproof colloid at the connection between the wire box, the outer shell 1 and the waterproof shell 4 is designed to be a material with a relatively large thermal expansion coefficient. When the lamp source 2 is working, the two connections can be further locked. It also includes a waterproof coating, which is adhered to the outer surface of the outer shell 1, and the material of the waterproof shell 4 is polycarbonate, which further improves the ability of the waterproof shell 4 to resist external water vapor, thereby further improving the waterproof performance of the lamp.

[0043] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A waterproof packaging structure for an outdoor LED linear lamp, comprising an outer shell, a transparent lamp cover buckled at an opening of the outer shell, and a light source disposed within the inner cavity of the outer shell, characterized in that: The outer shell is configured as a hollow structure; The hollow structure of the outer shell is connected to the inner cavity and is provided with a vent hole, and the hollow structure of the outer shell is filled with a water-absorbing material; The outer shell further includes a ventilation assembly, the ventilation assembly including two symmetrically arranged connecting blocks and a movable block, an opening between the two connecting blocks, the opening communicating with the inner cavity and the outside, the movable block movably engaging in the opening and closing and opening the opening by moving up and down, the two ends of the movable block being connected to the two connecting blocks by springs, and when the light source is turned on, the air pressure in the inner cavity rises, pushing the movable block outward to close the opening; When the light source is turned off, the air pressure in the inner cavity drops, and the spring rebounds to cause the movable block to contract inward to open the opening. The air in the inner cavity and the outside is exchanged to dry the water-absorbing material, and the central axis of the movable block coincides with the symmetry line of the two connecting blocks. It also includes a waterproof shell and a light-transmitting outer cover sleeved on the outside of the outer shell, the inner cavity of the waterproof shell realizes gas exchange with the outside through a waterproof breathable valve, and the opening of the ventilation component is connected to the inner cavity of the waterproof shell; The waterproof shell is a hollow structure, and the hollow structure of the waterproof shell is filled with a heat-conducting material; The hollow structure of the outer shell is also filled with a dry material.

2. The waterproof packaging structure for outdoor LED linear lamps according to claim 1, characterized in that: The inner wall of the transparent lamp cover is provided with a reflective layer.

3. The waterproof packaging structure for outdoor LED linear lamps according to claim 2, characterized in that: It also includes a wire box for placing the power line, and the connection between the wire box, the waterproof shell and the shell body is provided with waterproof colloid.

4. The waterproof packaging structure for outdoor LED linear lamps according to claim 1, characterized in that: It also includes a waterproof coating, which is adhered to the outer surface of the waterproof shell, and the material of the waterproof shell is polycarbonate.

5. The waterproof packaging structure for outdoor LED linear lamps according to claim 1, characterized in that: Retractable rubber strips are arranged in the two springs.

6. The waterproof packaging structure for outdoor LED linear lamps according to claim 1, characterized in that: Waterproof sealing rings are provided between the edge of the waterproof shell and the light-transmitting outer cover, and between the shell body and the light-transmitting lamp cover.

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