Lifespan Extension in Automotive Lighting

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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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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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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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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LED lamp with redundant components to extend lifetime. The lamp has redundant light-emitting units and power supplies. The redundant units can be switched dynamically using an intelligent controller. This balances the load on each unit and reduces overall workload. This extends the life of the LED lamp by effectively reducing the light decay speed of each independent LED unit.

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Brightness self-adjusting car lights that automatically adjust brightness based on temperature to prolong LED life. The lights have a radiator, LED board, temperature sensor, power circuit board, and driver IC. The LED board with lights is inside the radiator. The temperature sensor monitors LED temperatures. The power circuit board connects the LEDs and sensor. The driver IC is outside the radiator. The lights have a transparent portion on the radiator to dissipate heat. The driver IC adjusts light brightness based on sensor readings to prevent excessive LED temperatures.

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LED lamp system that can predict and monitor the lifetime of individual LED lamps. The system uses sensors in the lamps to measure current, voltage, temperature, and usage time. This data is sent back to the control device over a dedicated line between lamps. The control device compiles the lamp status packets and sends them to a host computer. The host analyzes the data to calculate lamp life and notify when lamps are reaching end of life. This allows proactive lamp replacement planning to improve efficiency compared to waiting for failures.

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LED front fog lamp for cars with improved reliability and stability by using microcontroller (MCU) control to protect the LEDs from damage. The fog lamp circuit has stages like filter, voltage stabilization, DC/DC conversion, output filter, and MCU control. The MCU monitors LED junction temperature, detects overvoltage, open circuit, and short circuit. This allows the MCU to balance temperature, prevent overvoltage, detect open circuits, and shut off shorts to mitigate LED damage.

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Improving the control of lamp degradation to extend lamp life and reduce maintenance. The method involves calculating lamp degradation based on stored operating variables like current and temperature, using functions dependent on sets of constants. Initially, a first function is used with constants determined over shorter operating times. After a threshold time, a second function with different constants is used for longer operating times. This more accurately accounts for complex aging mechanisms of LEDs.

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Method and system to extend the service life of LED lamps by dynamically increasing the current as the lamp's light output decreases. This prevents premature lamp failure by compensating for light decay over time. The method involves setting a decay threshold and monitoring lamp brightness. When decay rate is below threshold, current is increased to maintain brightness. This prevents gradual darkening and extends lamp life.

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LED street lamp with built-in light attenuation compensation to overcome the aging and degradation of LEDs over time. The lamp has a dedicated power source with a microcontroller, memory, clock, temperature sensor, and up/down detection module. This allows onboard light failure detection and compensation without external devices. The microcontroller analyzes temperature, aging, and brightness changes to generate appropriate dimming signals to compensate for LED degradation.

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Device and method for maintaining vehicle lamps to prevent aging and dispersion of light. The lamp maintenance system has a housing, compressor, heater, supply line, sensor, and control panel. It connects to the lamp and diagnoses conditions like pressure, temperature, and humidity. If air leaks or moisture is detected, hot air is supplied to dry the lamp. This prevents moisture buildup that can degrade lamp performance and cause dispersion of light. By diagnosing and maintaining lamps before failure, it extends lamp life and improves safety by preventing aged, dispersed light.

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Automatically adjusting the duty cycle of PWM (pulse width modulation) to extend the life of LED lamps by compensating for temperature effects. The duty cycle is adjusted based on the temperature of the LED lamp. This prevents issues like sulfur degradation, electrical leakage, and black ribbon formation that can occur at high temperatures. A microcontroller monitors the lamp temperature and adjusts the PWM duty cycle accordingly to mitigate these issues and prolong LED life.

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A system to detect and extend the life of LED lights by constantly monitoring and adjusting the illumination level. It involves detecting the actual brightness of an LED lamp in real time and comparing it to a reference level. If the brightness falls below a threshold for a certain time, it indicates the end of LED life. The system then alerts the user to replace the LED. To prevent premature end-of-life, the brightness is increased if it falls below a certain ratio of the reference level. This involves amplifying and modulating a dimming signal sent to the LED driver. By maintaining the brightness within a range, it extends the LED life compared to uncontrolled operation.

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LED lamp for vehicles that provides constant brightness over a wide voltage range by using multiple LED blocks with current limiters. The lamp has a vehicle voltage input, multiple series-connected LED blocks, current sources for each block, and a controller. At low voltage, only a few blocks with high current limiters light up. At high voltage, more blocks with lower current limiters light up. The controller manages the current sources to maintain brightness as voltage changes. This allows consistent brightness over the voltage range of a vehicle's electrical system.

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Discharge lamp drive device that improves lamp life while reducing start-up time by adjusting the drive current based on lamp deterioration. The device stores lamp usage data like cumulative lighting time and steady-state voltage. During lamp startup, the drive current ramps up at a gradient based on this stored information. This prevents excessive current during lamp instability that can damage the inner wall. It allows customizing the ramp rate based on lamp condition to balance lifetime versus start-up time.

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