Lifespan Extension in Automotive Lighting

Temperature derating control for vehicle lamps that reduces lamp output in high temperatures to prevent failure without requiring additional temperature sensors or wiring. The control device stores derating curves for each lamp function based on internal/ambient chamber temperature and input power/current. It derates lamp power/current based on the stored curves for the lamp's current function and chamber temperature detected by a single temperature sensor. This allows temperature compensation without additional sensors or wiring for each lamp.

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A pixel-type semiconductor light-emitting device and vehicle headlamp that provides optimized illumination performance, contrast, brightness, and cut-off without increased complexity and power consumption. The light-emitting device has an array of pixels with light-emitting structures surrounded by barrier walls. Fluorescent layers on the structures emit light. The barrier walls shape the light emission pattern and prevent mixing between pixels. Some pixels have individual fluorescent layers, while others have a continuous layer. This allows different light distributions and intensities between adjacent pixels without cross-talk.

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A light-emitting module with improved heat dissipation and reliability. It uses a graphite member with grooves and embedded metal inserts, along with a metal member, to transfer heat more uniformly from the LED substrate. The graphite member is sandwiched between the LED substrate and another substrate, and the metal inserts in its grooves provide high thermal conductivity paths to dissipate heat.

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Automotive lamp employing a scanning light source for dynamic control of the light distribution ahead of the vehicle. The lamp includes a control system to detect abnormalities in the light source operation. Abnormality detection is performed by comparing the instruction signal to turn the light on/off with the actual detection of the light state at specific judgment timings.

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Vehicle lighting device that ensures adequate light output over a wide voltage range while minimizing flux change. The lighting device has multiple LEDs on a substrate, connected to a control element. At low input voltages, the control element lights fewer LEDs to reduce total voltage drop. As voltage increases, all LEDs are lit and flux is controlled to maintain total output. This prevents excessive flux drops at low voltages or large flux jumps when switching LED numbers.

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Power regulation system for automotive lamps that improves efficiency and longevity of the power management module. The system uses a control module connected to a boost step-up module, buck step-down module, and sampling module. The boost and buck modules are connected to the vehicle body power and LED lamp respectively. The sampling module connects between the buck and lamp. This allows adjusting the output voltage from the power management module based on the control module input. It also has protection modules for each boost circuit.

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Compensating for faulty LEDs in vehicle headlights to improve safety and reduce costs when LEDs fail. The system analyzes current and state of all headlight LEDs, identifies faulty ones, and generates compensation schemes to adjust lighting areas and intensities to mitigate the impact of failed LEDs. This compensates for areas with reduced illumination and maintains overall headlight brightness and safety when individual LEDs fail.

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Explosion-proof car lamp control system that prevents lamp overheating and explosion by monitoring lamp and environmental conditions. The system uses a vehicle controller, sensors, and analysis to adjust lamp state based on temperature, light intensity, and time. It detects if lamps are on too long, warns for cooling, and adjusts brightness. This prevents excessive temperature and explosion risk.

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Stable LED lamp with improved thermal management to prevent flickering and prolong lamp life. The lamp has an internal cooling device in the shade to dissipate heat from the LEDs. The cooling setup includes a housing, fan, and cover inside the shade. This isolates the heat-generating LEDs from the exterior lamp tube, preventing heat transfer to the tube which can degrade the LEDs. The internal cooling improves stability and longevity of the LEDs.

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Discharge lamp driving method to extend lamp lifespan by intelligently adjusting driving current based on machine learning and lamp voltage. The method involves selecting a driving mode from multiple modes based on machine learning, executing the selected mode, and switching modes if necessary. It also adjusts driving power when voltage exceeds a threshold, reduces target illuminance gain, and keeps current constant for low voltages. This dynamic power and illuminance regulation accounts for lamp variations and extends lifetimes.

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Automobile headlight assembly with improved sealing and cooling to extend lamp life. The headlight has a sealed housing with an internal socket for the lamp body. A movable sealing shell clamps around the lamp body to prevent fogging. A hollow sealing ring between the shell and housing expands with temperature changes to maintain the seal. The housing also has a temperature sensor and actuator to trigger cooling when the lamps overheat. An inflatable sleeve in the sensor housing expands with temperature to trigger the actuator. This moves a telescoping frame that lifts a discharge platform and cover to vent the hot air from the lamps.

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Car lamp overheating warning system that monitors LED temperature in real time and provides feedback to the driver to prevent overheating and improve lamp performance. The system uses a temperature sensor in the lamp body to detect LED temperature and transmit the data to a central controller. The controller processes the temperature information to generate control signals for the ambient lamp. The driver can see the ambient lamp's brightness to know the lamp's temperature. If the driver sees high ambient lamp brightness, indicating high LED temperature, they can dim the car lamp to reduce heat. This allows real-time temperature monitoring and adjustment to prevent overheating and improve lamp life.

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LED lamp tube with extended lifespan to reduce maintenance and replacement costs and inconvenience. The lamp has a power switch controller connected to three power boards equally spaced on the bottom plate. The lamp boards with LEDs are mounted on top of the power boards covered by a sleeve. If a power board or LEDs fail, the switch can be used to switch power to another board. This allows continuing operation instead of replacing the whole lamp.

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LED lamp for automotive headlights that provides high initial brightness and improves safety by gradually reducing power as the lamp heats up. The lamp has an LED substrate on the lamp holder, a heat sink below, and a power lead on the heat sink. An LED driver is connected to the power lead. The driver initially provides high power to the LEDs until they stabilize, then reduces power as the heat sink temperature rises. This gives high initial brightness for safety and reminding, then reduces power as the lamp warms.

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An improved LED lighting assembly with a multi-sided modular LED light bar that addresses issues like misalignment, assembly difficulties, and reliability of conventional linear LED tubes. The multi-sided LED light bar has multiple flat-sided faces that intersect at angles. The LED emitters, heat sink, and driver are arranged inside the multi-sided array. The bar can have 2, 3, or more sides. The parallel-series wiring, internal driver, and redundancy improve reliability. The modular design allows customizable length and emitter count. The lack of wiring connections simplifies installation. The flat sides enable even light distribution without a curved tube.

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Vehicle lamp system control that improves derating accuracy to avoid excessive performance or temperature damage. The control method selects the appropriate derating curve based on vehicle lamp operating conditions. Rather than a single curve, multiple curves are used. Factors like lamp type, low beam mode, idle state, and curve lighting are considered. This allows derating matching the actual lamp requirements for better accuracy and efficiency.

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Venue lighting that improves safety and reliability by monitoring and controlling the temperature of the lamp body. The lighting has a detection structure on the lamp body to remotely monitor temperature in real time. If the temperature reaches a preset limit, the adjustment control can automatically reduce the lamp's power to avoid damage from excessive heat. This allows proactive maintenance and prevents sudden failures due to overheating.

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Automatic fault detection and replacement for vehicle headlights to improve reliability and longevity. The headlight system has a positioning storage module, single-lamp photosensitive module, data processing module, component execution module, and automatic replacement module. By comparing lamp position and intensity, it detects failed lamps, replaces them, and recycles faulty ones. The headlight housing, board, and disassembly nozzle move precisely to replace lamps without manual intervention. The system also analyzes drive component positions to self-inspect.

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Flexible temperature derating of vehicle lamp light sources to optimize lamp performance and lifetime in different conditions. The lamp has a first light source, a drive circuit, sensors, memory, and processing. The drive circuit supplies a base current to the light source. The memory stores derating parameter groups based on sensor inputs. The processing calculates derated target currents based on the parameters and sensor readings, allowing customized derating vs temperature for each light source. This allows optimizing lamp performance and lifetime in different environments without hardware changes or software reprogramming.

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Vehicle lamp power management system that prevents current disorder between lamps and alarms the vehicle body when a faulty lamp is used. The system uses power switches between the lamps and control unit to isolate faulty lamps and prevent current overload. The switches are controlled based on the lamp power-on and fault signals from the lamps. This prevents current flow through faulty lamps while maintaining power to working lamps. This ensures the current through any lamp in fault is less than or equal to an alarm current. This allows timely detection of lamp failures and prevents driving with faulty lamps.

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