Safety Enhancements in LED Lighting Systems

An LED lamp design that enables high-power LEDs to operate without external heat sinks. The design features a cylindrical transparent housing containing a flexible PCB with mounted LEDs rolled up inside. The PCB is coated with a thin transparent layer to protect the LEDs. The rolled PCB, LEDs, and driver components are all enclosed within the housing, allowing efficient heat dissipation directly into the surrounding air through the transparent housing.

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A rearview mirror assembly featuring an integrated blind spot warning indicator. The assembly includes an optical housing and a lighting module that emits light through an inclined bottom surface. The housing's inner surfaces increase and then decrease in height towards the light source, shaping the emitted light beam. This design ensures high luminance light for the driver and lower luminance light for vehicles behind, enhancing visibility and safety.

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White LED lighting is designed to closely mimic natural sunlight, offering improved color rendering compared to traditional LEDs. The device uses broad-spectrum blue LEDs as the excitation source, combined with optimized green-yellow and red phosphors. The broad blue excitation fills in the cyan gap between the blue and green phosphors, enhancing color rendering. This results in full-spectrum white light that appears more natural, has a higher Color Rendering Index (CRI) and reduces eye damage from excessive blue light exposure.

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An LED tube lamp with an installation detection circuit that ensures proper connection to a lamp socket. The detection circuit outputs two pulses and includes a switch that receives these pulses along with the LED driving signal. If the lamp is not detected as properly connected during either pulse, the switch remains off, preventing the lamp from lighting up. If the lamp is detected as properly connected during at least one pulse, the switch stays on, allowing the lamp to light up. This mechanism ensures that the lamp only operates when fully installed, enhancing safety and reliability.

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Preventing eye injury from laser light sources by using polarization optics to block the laser light if the phosphor is damaged or removed. The system uses a polarized laser source and optics that change polarization. When the phosphor is intact, it absorbs the polarized laser light and emits scattered light. But if the phosphor is damaged or gone, the polarized laser light can pass through the optics unchanged. This allows the system to generate white light when working properly but blocks hazardous laser light if the phosphor fails.

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A lighting device that deactivates pathogens like bacteria while providing visually appealing light. The lighting device uses LEDs emitting blue light around 470 nm which is known to be effective at deactivating pathogens. The blue light then passes through a phosphor coating that converts some of it to longer wavelength visible light with a minimum irradiance of 0.01 mW/cm2. The converted longer wavelength light mixes with the blue light to form a combined light that is directed into the air. This allows the device to provide pathogen deactivation while still being a normal visible light source. The longer wavelength light prevents any potential negative effects of pure blue light while still providing sufficient blue light for pathogen deactivation.

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A light-emitting device with good color rendering and germ-reducing properties. It contains a light-emitting element emitting in the blue light range, and a phosphor that emits yellow, green, and red light when excited by the blue light. The phosphor composition includes europium-activated alkaline-earth phosphate, europium-activated halogen-containing alkaline-earth silicate, cerium-activated rare-earth aluminate, and europium-activated silicon nitride containing aluminum and at least one of strontium and calcium.

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A lighting system that deactivates pathogens like viruses and bacteria using a targeted narrow spectrum of visible light while providing visually appealing white light. The system has LED lights that emit a specific wavelength range known to kill pathogens. These lights are combined with other LEDs to create white light that meets color quality standards for indoor lighting. The white light masks the pathogen-killing light so the device can be used continuously in occupied spaces.

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An LED module and lighting device with improved sealing between the lens and base. The LED module comprises a base, a lens assembly, and a light source assembly. The lens assembly is in a threaded connection with the base. A sealing ring is disposed of at the connection position of the lens assembly and the base, and a sealant may further be disposed of. The threaded connection between the lens and base provides an increased force-bearing surface and even force bearing, resulting in a secure connection and good leakproofness.

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Light source unit for projectors with improved dust sealing to prevent contamination. The unit includes a holder case, a device holder with a light-emitting device, and a dustproof member with a frame-shaped dustproof portion. The dustproof portion has a softer packing section and a harder support frame. The packing section contacts the device holder and the case opening to seal gaps. The support frame provides rigidity. This prevents twisting during assembly which could cause dust entry.

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Lighting device that deactivates pathogens like bacteria and viruses in the air of a room while providing visually appealing light. The device uses LEDs emitting narrow spectrum visible light at 470nm that can deactivate pathogens. Phosphor coatings convert some of the light to longer wavelengths above 500nm. The device irradiates the air with a minimum 0.01 mW/cm2 of the 470nm light mixed with longer wavelength light to sanitize.

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An eye-safe light source that improves the light emission efficiency while regulating light distribution characteristics. The light source includes a semiconductor laser joined to a substrate with the wire perpendicular to the laser emission direction. The substrate has a curved reflection surface that faces the laser emission end to reflect the laser light. This avoids shadows and scattering bodies between the laser and reflector.

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A lighting device that can continuously and safely deactivate dangerous pathogens like MRSA bacteria in an environment. The device uses specific narrow spectrum visible light wavelengths and power levels that have pathogen deactivating potency but appear as regular white light to humans. The lighting device emits light with a minimum power level at 405nm wavelength to deactivate pathogens, while also emitting regular white light to illuminate the environment. This allows continuous pathogen control in occupied spaces like hospitals without the need for UV light doses that are distracting or objectionable to people.

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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.

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A socket assembly to hold an LED package securely for lighting applications without causing LED package failure. The assembly includes a base frame, isolator frame and electrical contact. The base frame attaches to a support structure and has a spring finger that applies a clamping force to the LED PCB. The isolator frame isolates the electrical contact from the base frame. This allows the spring finger to clamp the LED PCB against the support structure without applying excessive force that could fracture the LED package.

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A lighting system that deactivates pathogens like MRSA while still providing the desired illumination and color temperature for a space. The system uses lighting fixtures that emit both disinfecting light at 405 nm and regular visible light above 420 nm. The fixtures are arranged and powered to deliver a minimum disinfecting power density of 0.01 mW/cm2 on all surfaces. By optimizing the fixture arrangement and power levels, the system can sanitize the space over time without using distracting high power germicidal light.

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Light source unit for projectors that uses LEDs or lasers instead of lamps. The light source unit has a dustproof member with a frame-shaped dustproof portion that fits between the device holder and opening of the holder case. The dustproof portion has ribs that contact the device holder and holder case to seal the gap. This prevents dust from entering the device.

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Light engine for an LED light source that is lower cost, modular, and allows AC power input without complex circuitry. It achieves this by using multiple insulated substrates for the LEDs, driver circuitry, and protection, all bonded together. The LED elements are mounted on a substrate, with circuit substrates contacting it to apply voltage, and protection substrates surrounding all of it. This provides insulation between components and prevents shorts. The bonded substrates form a modular light engine that can be easily manufactured and scaled.

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A lighting module and device with improved heat dissipation and eye protection for LED lighting. The lighting module includes a bottom plate for heat dissipation, a light emitter with lenses, and a protective upper case. A gasket seals between the outer frame of the lenses and the upper case to keep out contaminants and shield the light. This provides good heat sinking from the bottom plate, while protecting the light output from the lenses by sealing the protection case.

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A lighting device for efficiently emitting light from an LED light source while protecting the eyes of users. The device uses a specific configuration of heat sink, light source, reflector, and reflective sheet to optimize light output and distribution.

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