Heat Control in Automotive Lighting

A retractable heat dissipation system for high-performance LED car lights to extend the life of the LEDs by actively cooling them when necessary. The system uses a retractable assembly inside the light tube and base that can extend and retract heat dissipation blades. Sensors detect when the LED temperature exceeds a threshold, at which point the blades extend to actively cool the LEDs. This prevents overheating and component failure. When temperatures are lower, the blades retract to reduce airflow resistance.

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An LED light source heat sink device with improved thermal management for high power LED lamps. The heat sink has a body surrounding the LED light source. The body has components like heat pipes, heat fins, and a fan to effectively dissipate heat from the LEDs. The heat sink has a central heat spreader plate, flattened heat pipes connecting it to the fins, and pipes connecting the fins. This configuration provides uniform heat distribution between the spreader and fins, and allows efficient heat transfer to the fan and airflow. The uniform pipes prevent hotspots and improve thermal performance compared to separate pipes.

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LED lamp with a multi-stage heat dissipation system to improve lamp efficiency and lifespan. The lamp has a light-emitting component with a back panel, LED element, and fixed frame. A heat dissipation component includes fins, sleeve, cover, and fan. The back panel has fins, and the sleeve nests inside. The cover has a fan connected to the control board. The support frame connects the panel and cover with a rotating shaft for movement. This multi-stage heat dissipation setup with fins, sleeve, cover, and fan provides efficient cooling and airflow to the LED element.

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Heat dissipation device for LED lighting fixtures that allows efficient cooling of the LEDs to extend their lifespan. The device has a heat transfer lamp panel with an array of second heat sinks around the outer wall. Each second heat sink has an internal air inlet slot and ventilation holes connected to bottom first heat sinks between the second sinks. This allows air to flow through the device and extract heat from the LEDs. The LED fixture is mounted on the bottom of the heat transfer panel. The panel has a through hole for wiring and a threaded hole to attach the fixture.

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A vehicle lamp body that is easily recyclable and allows for efficient separation of the lens and housing components at the end of life while maintaining high rigidity. The lamp body has a housing attached to the vehicle body and a lens joined to the housing. The lens contains a specific heat-generating region that facilitates separation from the housing.

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Multi-dimensional convection heat dissipation floodlight with improved cooling performance by increasing airflow around the light source and housing. The floodlight has a hollow shell with protrusions on the outer wall. Between these protrusions are hollow grooves that lead to the interior of the shell. These grooves form a convection channel that allows air to flow through the shell and around the light source to dissipate heat. The raised protrusions also break up the airflow around the shell to further enhance convection cooling. This improves heat dissipation from the LEDs and extends their lifetime.

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Heat dissipating structure for automotive LED headlights to improve brightness, power, and lifetime while keeping the lights cool. The structure integrates the radiator, heat pipes, and LED board into a single unit to efficiently transfer heat from the LEDs to the fins. This eliminates the need for separate parts that can compromise heat dissipation. The integrated structure allows quick heat transfer and dissipation, reducing LED temperatures to improve brightness and longevity. The design also enables higher-power LEDs without overheating. By welding the parts together, heat is directly conducted from the LEDs to the fins. This ensures better heat transfer compared to separate components.

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A vehicle headlight system using LEDs that achieves low and high beam patterns from a single module. The system has two LED elements mounted on a common heatsink. In low beam mode, one LED is operated at high power while the other is off. In high beam mode, the second LED is operated at high power while the first is dimmed. The disjunctive operation reduces the thermal load on the heatsink. The LEDs can be dimmed using PWM or using fewer LEDs from a group.

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Vehicle lighting assembly with a heatsink and active cooling for thermal management of LED headlamps. The assembly has a heatsink that contacts the backside of the PCB to dissipate heat from the LEDs. The heatsink has fins and channels to facilitate airflow. A blower is positioned to draw air through the channels and exhaust it onto the PCB. This actively cools the LEDs to prevent overheating. The blower can be mounted in the heatsink or externally.

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A forward LED light with cooling capabilities melts ice and keeps the lens clear. A heat transfer device and temperature sensing distribute heat from inside the light to a heatsink cover on the outside. This allows the light to use its own heat to deice the lens and prevent obstructions in cold and snowy conditions. The device detects low temperatures inside the light and activates a heating element on the front heatsink cover to generate more heat for deicing.

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Cooling system for vehicle lighting modules that improves cooling efficiency and reduces module size compared to conventional systems. The cooling system uses a heat sink with internal channels and fins to circulate air and extract heat from the light sources. It has a central wall protruding into the channels to direct the air flow. The heat sink surrounds the light sources, with the channels between the sink and the sources forming a closed circulation path. An axial fan blows air into the sink to cool the sources. The design allows efficient heat removal from the sources using forced convection without large external fins.

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LED backlight module radiator for improving heat dissipation in LED backlight applications. The radiator has an LED lamp bar with a rear cover plate. The rear cover has a fan, blower, and heat sink opening. The middle of the cover has a dust filter and heat conduction sheet. The LED lamp beads have contact pieces with thermal grease to transfer heat to the sheet. The blower blows air into the lamp bar chamber and fan extracts heat. The design concentrates heat in the chamber, prevents diffusion, and forces air flow for efficient dissipation.

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Vehicle lamp design that prevents inner lens deformation and damage from concentrated light. The lamp has a recessed area in the light guide near the bottom surface. This recessed area reflects light back instead of transmitting it further. A heat dissipation unit is mounted on this recessed area to absorb and dissipate the concentrated light. This prevents excessive temperature buildup and deformation in the inner lens. The recessed area with the heat dissipation unit is shaped to match the cutoff line of the low beam pattern.

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LED light source cooling device to improve heat dissipation compared to natural convection. The device has a casing with an internal heat-conducting layer. The heat-conducting layer has penetrating holes connecting groups. An LED light source attaches to the far side of the layer. A heat sink on the other side of the layer contacts the LED. The sink has a U-shaped bracket that rotates and has a fan attached. This actively forces air through the penetrating holes to extract heat from the LED and sink.

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Heat dissipation sheet for LED lighting that rapidly absorbs and spreads high heat generated by LEDs to discharge it to the exterior. The sheet is a composite material with an epoxy resin binder containing conductive powder. The epoxy resin is modified with nitrile rubber, silicone, and monoepoxy components. Curing agents, accelerators, antifoaming agents, dispersants, and sedimentation inhibitors are added. The conductive powder is graphene, silver, copper, aluminum, or a mix for LED applications. The composite sheet is formed with a thickness of 20-40 µm to tightly adhere to the LED board and heat sink for improved heat dissipation.

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LED lamp for vehicle lights that mimics the appearance of conventional lamps while improving reliability and service life. The LED lamp has a heat sink body with an insertable conductive structure to connect the LED modules. The heat sink body has a central bore, side duct, and opening. The insertable structure fits in the duct with contacts accessible through the opening. This allows easy module connection and heat dissipation. The integrated heat sink design reduces temperature and improves longevity compared to a separate bulb/heat sink.

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Heat dissipation assembly for high-power LED lamps that reduces size and improves heat dissipation compared to conventional designs. The assembly has a heat transfer plate with multiple heat sinks mounted on it. The heat sinks are clamped between adjacent ones to form a support member. The heat sinks have fins with spaces between them. The fins on one side of an adjacent pair are clamped to the support member's first side. The fins on the other side are clamped to the second side. This encloses an internal cavity. The support member holds the heat sinks together and prevents them from separating during thermal expansion. The cavity allows airflow between the fins for improved heat dissipation.

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A compact, lightweight heat dissipation system for LED automotive lighting devices that efficiently transfers heat generated by the LEDs without needing bulky heat sinks or active cooling. The system encapsulates a phase change material (PCM) heat sink inside the LED light source housing. The PCM changes phase between solid and liquid at certain temperature ranges. This allows the PCM to absorb and store excess LED heat during operation, preventing overheating, and then release it back when the LEDs cool down. This provides targeted, localized heat dissipation without requiring external cooling components.

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Passive cooling system for LED vehicle lamps that removes heat from the LED without active cooling. It uses a heat pipe embedded in a heat sink with the LED mounted directly on the pipe. Heat transfers from the LED to the pipe and then to the sink, passively cooling the LED without a fan. The heat pipe allows effective heat removal compared to just using the sink alone. The LED is mounted close to the center of the pipe to maximize heat transfer. The heat sink has a slot to receive the pipe. The LED is electrically connected to a PCB mounted on the sink.

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Passive heat dissipation system for vehicle lamps that uses a heat pipe embedded in a heat sink to remove heat from the LEDs without a fan. The LED is mounted directly to the heat pipe which is then inserted into the heat sink slot. Heat transfers from the LED to the heat sink via the pipe for passive cooling. This allows comparable heat removal to a fan-based system without active airflow.

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