Moisture Protection for LED Systems
LED lighting systems in outdoor and high-moisture environments face significant degradation risks, with moisture ingress leading to corrosion of electrical contacts, delamination of optical components, and accelerated lumen depreciation. Field data shows that traditional sealed designs can experience up to 30% light output reduction within 5000 hours of operation in high-humidity conditions.
The central challenge lies in maintaining optical and electrical performance while achieving long-term protection against moisture infiltration without compromising thermal management or serviceability.
This page brings together solutions from recent research—including advanced silicone composite sealants with zinc silanolate, integrated drainage systems for water management, thermally-matched hermetic sealing techniques, and self-heating protective covers. These and other approaches provide practical pathways to extend LED system lifetime in demanding environmental conditions.
1. Light-Emitting Device with Housing Featuring Humidity Control Space and Waterproof Ventilation System
PALITE CORP, PATORAITO:KK, 2023
Light-emitting device with waterproofing and dew prevention. The device has a housing with an internal light source, a cover, and a waterproof/breathable member. The cover forms a humidity control space between it and the housing upper wall. A ventilation hole connects this space to the outside. The waterproof member covers the housing communication hole. This allows moisture inside the housing to escape to the control space and out via the vent. It prevents foreign matter entry while allowing humidity control.
2. Shoebox-Style Outdoor Lighting with Finned Conduction Cooling, Active Fan Cooling, Water Absorption Chamber, Ionizer, and Adaptive Light Sensor
SHENZHEN HUAGUAN OPTOELECTRONIC TECH CO LTD, SHENZHEN HUAGUAN OPTOELECTRONIC TECHNOLOGY CO LTD, 2023
Shoebox-style outdoor lighting with improved moisture resistance and heat dissipation. The lighting has features like fins for conduction cooling, a fan for active cooling, a water absorption chamber at the air intake to dehumidify, an ionizer to purge dust from the lens, and a light sensor to adapt brightness to external conditions.
3. LED Tri-Proof Lamp with Finned Cooling Plate and Sliding Limiters for Enhanced Heat Dissipation and Stability
SHENZHEN HEPAI TECH CO LTD, SHENZHEN HEPAI TECHNOLOGY CO LTD, 2023
LED tri-proof lamp with improved heat dissipation and moisture resistance compared to existing designs. The lamp has a housing with a protective cover, an LED board, and a cooling plate with fins. The LED board is sandwiched between the housing walls and the cooling plate. This allows airflow around the board for cooling. The board is also mounted using sliding limiters that prevent wobbling. This prevents heat buildup and prolongs LED life. The fins dissipate heat further. The housing also has grooves to accommodate the board mounting. The sliding limiters prevent board movement while allowing disassembly.
4. LED Power Supply with Sealed Assembly Cavity and Metal Inner Shell for Moisture Protection
SHENZHEN FOSEN TECH CO LTD, SHENZHEN FOSEN TECHNOLOGY CO LTD, 2023
LED power supply with moisture-proof functionality to prevent internal component damage in humid environments. The power supply has a sealed assembly cavity with a moisture-proof inner cavity containing the PCB and components. A metal inner shell suspends in the assembly cavity and has sealing part filled with heat-dissipating sealant covering the PCB and components. This prevents water vapor ingress between the PCB and components, improving reliability and lifespan in humid conditions.
5. LED Lamp Enclosure with Self-Adaptive Sliding Baffles for Airflow and Waterproofing
JIANGSU SUNRAY TECH CO LTD, JIANGSU SUNRAY TECHNOLOGY CO LTD, 2022
LED lamp with self-adaptive waterproofing and heat dissipation for outdoor applications. The lamp has an enclosure with separate air intake and exhaust channels. A waterproof assembly seals the intake and prevents moisture ingress when there's a lot of water. A water level sensor triggers closing the intake and exhaust when water accumulates. A sliding mechanism moves the waterproof baffles in and out. When water is low, the baffles retract to allow airflow. When water is high, they close to block ingress. This provides adaptive waterproofing without sacrificing heat dissipation.
6. LED Point Light Source with Vapor Condensation Management and Heat Dissipation System
HUNAN RAINBOW SOURCE PHOTOELECTRIC SCIENCE AND TECH LIMITED CO, HUNAN RAINBOW SOURCE PHOTOELECTRIC SCIENCE AND TECHNOLOGY LIMITED CO, 2022
Waterproof vapor LED point light source that prevents internal condensation without sacrificing heat dissipation. The light source has a main board with LED points and a lampshade to protect it. A vapor assembly on the main board side near the lampshade has a thermal insulation layer to condense water vapor. A super-hydrophobic film with a diversion groove between the insulation layer and board helps droplets grow on the film instead of inside the lamp. As droplets merge, they leave through the groove without blocking light or heat dissipation.
7. LED Light Source Module with Sealed Extension Frame and Adjustable Fixed Shaft
ANHUI RUNCHENG ELECTRICAL AND MECH CO LTD, ANHUI RUNCHENG ELECTRICAL AND MECHANICAL CO LTD, 2021
Moisture-proof and fog-proof LED light source module to prevent failure due to humidity and fog. The module has a fixed column, an extension frame, and a light-emitting seat. The extension frame attaches to the column top and has a fixed shaft. The light-emitting seat has a cover screwed on. This encloses the LED components inside the column and prevents humidity ingress through the open top. The extension frame and cover seal the gaps. The shaft allows adjustment.
8. Water-Tight LED Module with Integrated Lens Array and Compression Seal Mechanism
SCHREDER, 2021
A water-tight LED module design that eliminates the need for a separate gasket to seal the module against water ingress. The module uses a secondary lens array to cover the LEDs, and a lens holder that compresses the lens array against the module base plate to create a seal. The lens array has a peripheral lip that the holder's skirt compresses against the base plate surface. This provides a water tight seal around the LEDs and circuit board.
9. Waterproof LED Light Source Housing with Water-Shielding Frames and Removable Transparent Cover
GUANGZHOU LONGZHU PHOTOELECTRIC TECH CO LTD, GUANGZHOU LONGZHU PHOTOELECTRIC TECHNOLOGY CO LTD, 2021
LED integrated light source with a waterproof housing to prevent water damage when used outdoors. The housing has features like water-shielding frames covering the heat sink holes, a water blocking ring around the LED board, and a removable transparent cover held by an intrusion bar. This prevents water from entering the housing through the holes and shields the LED board. The removable cover allows access for maintenance.
10. LED Lighting Equipment Housing with Inverted Cone Structure, Gas Exchange Valve, and Integrated Water Leakage Detection
Shenzhen Dart Culture and Technology Co., Ltd., SHENZHEN DART CULTURE TECHNOLOGY CO LTD, 2021
Waterproof protection device for LED lighting equipment with improved reliability through a combination of structural and material waterproofing. The device uses an inverted cone housing with a gas exchange valve, an LED drive unit, a water leakage detection circuit, and a base. The gas exchange valve allows venting to prevent pressure buildup. The water leakage detection circuit cuts power if water is detected. The housing shape prevents water entry while the vent prevents internal pressure issues. The valve combines a breathable membrane with a mechanical structure to enhance sealing reliability. A base seal with limiting flanges prevents horizontal movement. Heat dissipation protrusions and channels help condensate management. The wire tube connection with a tapered plug provides hermetic sealing.
11. Enclosed LED Module with Waterproof Structure and Integrated Heat Dissipation
K I A D, KIAD, 2021
Waterproof LED lighting system for indoor and outdoor use that prevents condensation and allows easy series/parallel connection. The lighting system has an enclosed LED module case with a waterproof structure. Inside, an LED module is mounted and covered by a diffusion panel. A side cover seals the ends. This prevents moisture ingress. The case has heat dissipation means. A moisture-absorbing material inside absorbs any moisture that does enter. The lighting devices can be connected in series or parallel for flexibility. Each unit has independent control.
12. LED Lighting Device with Detachable Covers and Integrated Moisture Control Features
K I A D, KIAD, 2021
Waterproof LED lighting device with detachable covers to allow easy installation and maintenance in both indoor and outdoor environments. The device has a case, a coupling part, an inner space, and covers. The case has a fixing portion and a lower coupling portion. The inner space holds the control board. Both ends of the case have openings. The side cover seals the openings and has a foldable portion. The diffusion cover surrounds the coupling part. The covers can be opened and closed to connect adjacent devices in series or parallel. The device also has features like moisture-absorbing, heat dissipation, and waterproofing to protect the LEDs and board from moisture and condensation.
13. Enclosed LED Light Source Module with Electromagnetic Defogging and Integrated Wiper Mechanism
JIANGMEN OUYUE TECH LIGHTING CO LTD, JIANGMEN OUYUE TECHNOLOGY LIGHTING CO LTD, 2021
Moisture-proof and fog-proof LED light source module to prevent water droplets and fog from affecting the lighting performance of the LED module in low temperature or dense fog conditions. The module has an outer support rod connected to the LED pole, with a light box, transparent plate, heat sink, driver, motor, threaded rod, threaded block, moving block, connecting plate, sliding block, fixed plate, electromagnet, fixed iron plate, defogging plate, wiping cloth, rolling block, and solar panel components arranged inside. This enclosed design with moving wipers and electromagnetic defogging prevents moisture ingress into the LED light source.
14. Outdoor LED Light Module with Sealed Housing and Multi-layer Waterproofing Mechanisms
FUJIAN SHANGHANGYADA ELECTRONIC TECH CO LTD, FUJIAN SHANGHANGYADA ELECTRONIC TECHNOLOGY CO LTD, 2021
An outdoor waterproof LED light source module to prevent water ingress and improve the life of LED lights used in outdoor applications like portable lamps, emergency lamps, table lamps, flashlights, etc. The module has multiple waterproof measures to prevent water from entering the light source. This includes a sealed housing, waterproof connectors, silicone seals around the LED board and components, and gaskets around the lens. The module's waterproof design prevents water seepage into the internal circuitry to avoid damage and extend the LED light's service life in outdoor environments.
15. Hermetically Sealed LED Housing with Metal Cap and Thermal Expansion Matching
SCHOTT AG, 2021
A hermetically sealed LED light for use in medical instruments. The LED light has a housing that is at least liquid-tight. The housing includes a base with LEDs and a metal cap with windows. The cap is attached to the base to seal the LEDs inside. A coating is applied to the cap to enhance sealing. The cap is made of stainless steel with similar thermal expansion to the base material to prevent leaks.
16. LED Power Supply Enclosure with Open Gap and Through-Hole Ventilation Design
Tongling Maiwei Electronic Technology Co., Ltd., TONGLING MAXWELL ELECTRONIC TECHNOLOGY CO LTD, 2020
LED power supply enclosure with improved heat dissipation and moisture resistance. The enclosure has a unique design with an open gap between two connected housing sections. This gap allows natural convection cooling and prevents moisture buildup inside. Through holes in one housing section allow airflow. The enclosure also has an end cover and internal mounting board. This configuration provides better heat dissipation and moisture resistance compared to traditional sealed boxes.
17. Lamp Housing with Sealed Electronics Module and Integrated Drainage Channels
NGL GLOBAL LIMITED, Jensen-Tomy T K Lai, 2020
A lamp that can effectively discharge water or liquid that gets into the lamp housing and prevent sensitive electronic components from getting exposed to the outside when servicing the lamp. The lamp has a separate sealed lamp module that contains the electronics, which can be mounted and sealed into an outer case. The outer case has drainage channels to allow any moisture that gets inside to flow out. The separate module can be accessed by opening the rear cover of the outer case without exposing the electronics to the elements.
18. Outdoor Lamp Housing with Honeycomb Heat Dissipation and Integrated Moisture Sensing System
SHANDONG XUCHENG LIGHTING TECH CO LTD, SHANDONG XUCHENG LIGHTING TECHNOLOGY CO LTD, 2020
Moisture-proof and water-ingress outdoor lamp design that prevents water and moisture from entering the lamp housing and circuit board, and automatically eliminates any detected water vapor. The lamp has a heat dissipation and moisture-proof structure on the bottom with honeycomb holes and a moisture-proof paint coating. It also has an internal water vapor sensor, microprocessor, and fan that can detect and blow out any moisture. This ensures the dryness inside the lamp housing and around the circuit board to prevent water damage.
19. LED Module with Directional Light and Spectrum Matching for Plant Growth
Industrial Technology Research Institute, 2020
LED light source module for plant growth applications that provides directional light, improved spectrum matching for photosynthesis, and waterproofing. The module has an LED board with multiple LEDs facing up or down, an optical reflector to redirect the light, a waterproof cover, and a pole with a power supply.
20. Lamp with Drainage Channels and Sealed Lamp Module for Water Egress and Component Protection
JENSEN-TOMY TK LAI, NGL GLOBAL LIMITED, 2020
Drainable lamp that allows water to exit the lamp, and protects internal components from exposure during maintenance. The lamp has an outer case with an inner space, a lamp module at one end of the case, a rear cover at the other end, and drainage channels connecting the ends. The lamp module is sealed and contains the electronics. The rear cover can be opened for maintenance without exposing the electronics. This separates the sealed lamp module from the outer case, allowing water to drain out the channels rather than contact the electronics.
21. LED Lighting Fixture with Dual-Shell Construction and Integrated Waterproof Films
SHANGHAI YIZHON CULTURE MEDIA CO LTD, 2020
Waterproof LED lighting fixture that prevents failure due to moisture ingress. The fixture has an upper shell with a waterproof film on the outer surface and a lower shell with a waterproof film on the bottom. The upper and lower shells are connected with the films sandwiched in between to provide complete waterproofing. The waterproof films prevent moisture intrusion through the seams and gaps between the shells. An operation indicator board on the waterproof film helps prevent damage from improper operation.
22. Sealed LED Power Supply with Integrated Water Cooling and Moisture Barrier
SHENZHEN FAHOLD ELECTRONIC LTD, 2020
Moisture-proof LED power supply with improved heat dissipation for outdoor applications. The power supply has a moisture barrier on the bottom that seals against water ingress. Inside the sealed housing, the LED power supply components are mounted on separate pads connected by a base. This isolates the power supply from direct contact with the ground to prevent water accumulation. A water cooling block, tank, pump, and heat exchanger are connected to circulate water through the power supply and heat sink to dissipate heat. The sealed housing with water cooling prevents moisture damage while allowing effective cooling.
23. LED Module with Integrated Lens Assembly for Water-Tight Sealing
SCHREDER, 2019
Water-tight LED module that uses a lens assembly to seal against water ingress without additional gaskets. The LED module has a base plate with an LED circuit board mounted on it. A secondary lens array is positioned over the LEDs. A lens holder mounts over the secondary lens array. The holder has apertures for the secondary lenses and compresses parts of the secondary lens array against the base plate to form seals. The secondary lens array has bosses that engage with the holder to create the seals. This provides water-tightness without needing separate gaskets.
24. Lighting Module with Heat Sink Plate and Sealing Frame for Enhanced Heat Dissipation and Water Ingress Prevention
LG Innotek Co., Ltd., 2019
Lighting module with improved heat dissipation and water ingress prevention for LED lighting apparatus like streetlights. The module has a heat sink plate, LED board, and lens cover with a waterproof frame between them. The frame has projections that seal against the plate and lens. It also has gaps and projections on the plate sides for cooling airflow. This allows efficient heat dissipation while preventing water entry.
25. LED Work Lamp with Electrically Heated Glass Cover and Integrated Temperature-Controlled Activation System
FoShan Brighter LED Lighting Co., Ltd., 2019
An LED work lamp that heats up and melts ice and snow off the lamp cover to maintain visibility in cold weather conditions. The lamp has an electric heating glass cover that surrounds the LED board and lens. Electrodes on the glass connect to a temperature controller and the lamp circuit board. The controller activates the heater when it detects freezing temperatures.
26. LED Light Source Module with Sealed Enclosure and Integrated Heat Sink
Foshan Bema Lighting Technology Co., Ltd., 2019
Waterproof LED light source module for lamps and lanterns that provides better water resistance compared to traditional LED lamps. The module has a sealed enclosure with wiring terminals, a light board with LED chips, a heat sink, and a driving module. A transparent plate covers the enclosure opening to seal it. This prevents water ingress into the enclosure containing the LED board, heat sink, and wiring terminals. The driving module connects to the terminals. This waterproof design eliminates the need for separate waterproofing of the lamp components like the shroud and holder.
27. LED Lighting Module with Polygonal Housing and Gas-Sealed Interior
DAEDO LED CO LTD, Daedo LED Co., Ltd., 2018
Waterproof LED lighting module for outdoor applications that prevents condensation without using internal dehumidifiers. The module has a unique housing shape with a polygonal plate that seals around the LED board and cover. The cover is inserted into a through hole in the housing. The module is filled with sealant and gas to seal the interior and prevent moisture ingress. The electrical connections are made through a waterproof cable with sealed sections. This provides waterproofing without internal dehumidifiers while simplifying the module structure.
28. Reflector with Integrated Sealing and Light Directing Channels
The L.D. Kichler Co., 2018
A light source with a reflector that also seals the light source. The reflector has reflective internal surfaces that direct light towards a light modifier. It also has channels to hold and seal the light modifier. The reflector seals the light source to keep out moisture while maximizing light output.
29. LED Lighting Device with Housing Fins, Cable Compartment, and Discharge Hole
GIM JUN YEOP, Kim Jun-yeop, 2018
LED lighting device with improved waterproofing and heat dissipation for outdoor applications. The device has a housing, cover, and cable. The cover has a compartment for the cable and a waterproof member filling the gaps. The LED has a discharge hole to exit the compartment and guide water out. This prevents water accumulation inside that can heat and degrade components. The housing has fins for heat dissipation and a front glass for light transmission.
30. LED Module with Molded Plastic Cover Enclosing Circuit Board and Exposed LED
Seoul Semiconductor Co., Ltd., 2018
LED module for channel letters that protects the electronic components from the elements. A molded plastic cover encloses the circuit board and leaves only the LED exposed. The cover has an opening on the bottom to connect to the channel. The cover seals the board from humidity while still allowing modular replacement. The channel has protrusions that contact the bottom opening to provide a heat path.
31. Solid-State Packaged LED with Waterproof and Thermally Conductive Potting and Sealed Wire Path
Zhongshan Pinyuan Lighting Appliances Co., Ltd., 2018
Solid-state packaged LED cold light source with improved water resistance for outdoor applications. The LED light source has a bottom shell filled with waterproof and thermally conductive potting glue. The bottom shell has a lead-out hole for the power supply wire. A sealing plug sleeve is fitted over the wire. The lead-out hole has an annular sealing protrusion, and the sleeve has a matching sealing protrusion. This provides a sealed path for the wire. The top cover has a thick-walled upper section and a thin-walled lower section that transition through a limit step. This allows the top cover to fit snugly against the thicker bottom shell. The bottom shell also has a process protrusion with a larger hole. This provides a sealed gap between the protrusion and shell edge, filled with potting glue.
32. Modular LED Lighting System with Twist-Lock Installation and Sealed Housing for Wet Locations
Energyficient Lighting Syst., 2018
A modular LED lighting system that can be retrofitted into existing fixtures and provides an easy, watertight twist-lock installation. The system includes a modular LED lamp that can be installed on an existing socket without tools. This lamp has a sealed housing with a drain to prevent water accumulation. The system also includes a twist-lock junction box and sub-assembly for wet locations. The modular components can be mixed and matched to upgrade lighting fixtures to use low-wattage LEDs in wet locations.
33. LED Driver Power Supply with Integrated Moisture-Proof Heating and Insulation Mechanism
Tongling Maiwei Electronic Technology Co., Ltd., 2018
Moisture-proof LED driver power supply to prevent internal moisture ingress and prolong service life in humid environments. The moisture-proof features include: (a) a heating wire between the driver body and fixing sleeve to prevent internal temperature rise, (b) heat insulation layer between driver body and heating wire, (c) fixing ring between heat insulation layer and fixing sleeve, (d) shell around fixing sleeve, (e) lime layer between shell and sleeve, (f) baffle plates around driver body, (g) retaining rings connecting baffle plates to sleeve and shell, and (h) electrical connections between heating wire, processor, feedback module, comparison module, and humidity sensor.
34. Modular Interlocking Multi-Panel LED Display with Exposed Electronics and Passive Cooling
Ultravision Technologies, LLC, 2018
Modular multi-panel LED display without cabinets to provide a lower cost, lighter weight and more robust replacement for large outdoor LED displays. The modular panels are interconnected directly without cabinets or enclosures, exposing the electronics to the environment. Heat sinks and passive cooling dissipate the heat. The panels have recessed components, sealed with potting, to protect against moisture. The panels interlock for a seamless display. The main panel has extra components like power supplies while slave panels are simpler.
35. LED Lighting Module with Airtight Sealed Housing and Pressure Equalizing Valve
DAEDO LED CO LTD, Daedo LED Co., Ltd., 2018
Waterproof LED lighting module for outdoor applications that prevents condensation without using internal dehumidifiers. The module has a sealed housing with a peeled-off electric cable end filled with sealant. This makes the housing airtight and prevents moisture ingress. A valve is provided in a through hole to equalize pressure. The front cover has a peeled-off cable end filled with sealant. This airtight seal prevents condensation inside the module when exposed to outdoor conditions. The waterproof module can be used in outdoor lighting devices.
36. LED Module with Moisture-Permeable Holes and Waterproof Membranes for Thermal Expansion Management
Lee Dong-wook, Keumkyung Lighting Co., Ltd., 2018
LED module with waterproofing to prevent moisture ingress and prevent damage from thermal expansion/contraction. The module has a substrate with LEDs, a heat sink, and a transparent lens cover. Between the substrate and heat sink, and between the substrate and lens cover, there are vertical moisture-permeable holes. Inside these holes are waterproof moisture-permeable means, like PTFE membranes or insertable parts, that allow moisture generated by temperature changes to pass through. This prevents moisture buildup and expansion gaps between components. The moisture-permeable holes and means protect the module from moisture ingress while still allowing moisture to escape.
37. Modular LED Lighting System with Sealed Housing and Twist-Lock Fixture for Wet Location Retrofitting
Energyficient Lighting Syst., 2018
Modular LED lighting system for retrofitting existing fixtures in wet locations like barns. The system includes an LED lamp that can attach to standard sockets, a junction box that replaces the socket, and a twist-lock fixture body. The lamp has a sealed housing with a fan to prevent water buildup, drains to remove any water, and a socket adapter to connect to existing sockets.
38. LED Power Supply with Sealed Enclosure and Integrated Drying System
Zhongshan Taichuang Power Technology Co., Ltd., ZHONGSHAN TAICHUANG POWER TECHNOLOGY CO LTD, ZHONGSHAN TAICHUANG POWER TECH CO LTD, 2017
LED power supply with waterproofing to prevent damage from water ingress and condensation. It has a sealed enclosure with a cover, base, and sealing ring. The cover and base have waterproof and insulation materials. The power supply main body has a heat sink plate and moisture barrier. The cover has a drying system to remove condensed water. The main body has inlet and outlet grooves to prevent wires entering. This provides comprehensive waterproofing and drying for the LED power supply.
39. LED Lamp Enclosure with Internal Waterproof Coating and Sealed Component Housing
ANHUI ACE-POWER ELECTRONICS TECH CO LTD, ANHUI ACE-POWER ELECTRONICS TECHNOLOGY CO LTD, 2017
Waterproof LED lamp structure to prevent water ingress into the lamp when exposed to outdoor or bathroom environments. The lamp has a light box with a waterproof coating inside. The LEDs are mounted on a PCB board attached to the light box. A control panel at the bottom contains the driver, controller, moisture sensor, and fan. The back plate and cover seal against the card slot. This enclosure prevents water from reaching the internals and components, even if the lamp gets wet.
40. LED Lighting Device with Sealed Housing and Colloid-Encapsulated Power Supply
HANGZHOU HPWINNER OPTO CORP, 2017
LED lighting device with improved waterproofing and protection for the power supply components. The LED module and power supply are mounted inside a sealed housing filled with a colloid material. The power supply module is mounted on the housing with sealing around it. This prevents water vapor and dust from entering the power supply area. The colloid also insulates and cools the power components. A drain hole is provided for water discharge.
41. Sealed LED Lighting Fixture with Internal Liquid Circulation and Temperature-Controlled Current Regulation
JL Tech Corporation Co., Ltd., 2017
LED lighting fixture that can prevent flicker and maintain constant relative humidity inside the fixture. The fixture has an internal electrical insulating liquid to keep humidity levels steady. It also uses a temperature sensing circuit to control the LED current and prevent flicker. The liquid circulates inside the fixture to transfer heat. The fixture has a body housing and cover lens that are sealed together to prevent moisture ingress. The sealing and circulating liquid prevent internal moisture buildup and humidity changes. The temperature sensing and current control prevent flicker from the LEDs.
42. LED Lamp with Enclosed Housing and Sealed Post-Mounted Components
LIN JINSHAN, 2016
An LED lamp with improved waterproofing for outdoor use. The lamp has an enclosed housing that seals the LED light source and power supply module inside. The LED light source and power supply module are positioned within the housing using posts that extend through openings in the housing. This prevents water ingress between the components. The posts and housing openings are sealed to create a watertight enclosure around the lamp components.
43. Sealed LED Light Assembly with Photodiode Housing and Enhanced Heat Dissipation Structure
WENDENG BRANCH OF WEIHAI SECURITY BUREAU, 2016
A sealed LED light with improved fill light and heat dissipation for outdoor applications like security cameras. The light has a front housing for the LEDs and a rear housing with a sealed hole for a photodiode. The photodiode is mounted on the rear housing and sealed to prevent moisture ingress. This allows the photodiode to capture fill light without being exposed to harsh outdoor conditions. The sealed design also improves heat dissipation to prolong the life of the LEDs.
44. LED Lighting Fixture with Waterproof and Moisture-Permeable Housing and Cover Interface
KEUMKYUNG LIGHTING CO LTD, LEE DONG WOOK, 2016
LED lighting fixture with waterproof and moisture permeability to prevent ingress of moisture into the fixture and release internal moisture to extend performance and lifespan. The fixture has a housing, a transparent cover over the LED module, and waterproof/moisture-permeable means around the opening between the housing and cover. This prevents external moisture entry while allowing internal moisture release. The means can be PTFE membranes on the cover and housing sides. This prevents moisture damage to the electronics by blocking external moisture while allowing internal moisture escape.
45. Curved LED Grow Light Housing with Internal Airflow Path for Heat Dissipation and Water Resistance
Nextlight, LLC, 2016
LED grow light designed specifically for indoor gardening applications. The light has a curved housing with an internal airflow path to prevent water intrusion and effectively cool the LEDs and power supplies. The housing shape helps resist water ingress into the light. The internal structure has an airflow path that guides air over the heat sinks connected to the LEDs and power supplies to dissipate heat.
46. LED Lamp with Sealed Housing and Shade Connection Featuring Dual Seal Members
ZHEJIANG SHENGHUI LIGHTING CO, ZHEJIANG SHENGHUI LIGHTING CO LTD, 2016
Waterproof LED lamp with sealed housing to prevent moisture ingress when used in wet environments. The lamp has a sealed connection between the housing and shade, and a first seal member between the housing ends. This prevents water or vapor from entering the housing through the shade gap. The components like LED assembly and power supply are inside the sealed housing. The lamp can be used in wet locations like outdoors without damaging the internals.
47. LED Flood Light with Sealed Design, Integrated Heat Sink, and Cooling Slots
CHEN ZHAOJUN, 2016
LED flood light with improved water and dust resistance and better cooling compared to conventional LED flood lights. The light has a sealed design with a frame, translucent panels, housing, rubber ring, reflectors, chips, and electronics. The frame, panels, and housing are fixed together with a rubber seal. The reflectors and chips are mounted on the frame and housing surfaces. A heat sink aluminum plate is attached to the bottom of the housing. The electronics are secured to the bottom. The housing has cooling slots and the heat sink plate is slightly larger than the slots. It is fixed inside the housing to provide close contact for heat transfer. This allows efficient cooling of the chips through the housing slots. The sealed design prevents water and dust ingress.
48. Sealed UV Curing Light Source with Moisture Control and Coolant-Enhanced Heat Sink
HOYA CANDEO OPTRONICS CORP, 2015
A sealed UV curing light source for preventing condensation inside the enclosure while maintaining efficient heat dissipation. The light source has a closed case with a moisture control sheet inside. The light emitting elements are mounted on a substrate with a heat sink. Coolant flows through the heat sink to dissipate the LED heat. This prevents fogging on the UV window due to temperature differences between the inside and outside of the sealed case. The moisture control sheet regulates humidity inside the case to prevent condensation.
49. LED Outdoor Light with Convection Cooling Spaces and Water-Deflecting Rotating Covers
ORANGETEK LTD, 2015
An innovative LED outdoor light with improved heat dissipation and water management compared to sealed LED lights. The light has multiple heat-dissipating spaces between the LED bulbs and housing bottom to facilitate convection cooling. The outer surfaces of the rotating covers slope downwards towards the housing to prevent water flowing from the dissipation space into the housing. This allows efficient cooling of the LED bulbs while preventing water ingress into the housing.
50. LED Lamp with Heat Exchanger Housing and Individually Sealed LED Mounts
Limited Liability Company Plant Lighting Technologies, 2015
LED lamp design that provides improved environmental protection and reduces size compared to conventional lamps. The lamp has a housing formed mainly by a heat exchanger surface. This provides thermal isolation and prevents moisture ingress. The LEDs are mounted on a separate board away from each other to allow sealing around each one with secondary optics. This prevents internal components from being exposed to the environment. The lamp also uses a separate power supply. The design allows compact size and improved protection against environmental factors like moisture, dust, and temperature changes.
Innovative solutions for moisture-resistant LED lighting are demonstrated by the patents included here. These solutions help to progress the technology of LED lighting, ranging from enhanced sealing materials and waterproof designs to innovative heat dissipation and moisture management.
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