Have a look the claims of this patent. Let's us know if you agree that they are relevant to circuit arrangements for filaments in LED retrofit lamps. The patent is active in Germany, the UK, France, Italy, Austria and Switzerland. It has counterparts in China and Korea.
LED modules often have capacitors to reduce flicker. The LED, the capacitor and other electronic components are generally arranged on a printed circuit board. This patent allows for smaller form factors by separating LED and capacitor into two seperate structural units. This comes in handy when the form factor of an LED module or fixture needs to be small, such as in poorly accessible areas or where the light source is intended to be as movable as possible.
Solid State Lighting (SSL) modules, such as those for street lighting, need to simultaneously meet various requirements, namely: resistance to electrical overstress (EOS), resistance to thermal dissipation, long service life and mechanical strength. This patent proposes a solution to overcome the problem that these four aspects tend to create opposing constraints.
With this patent, an energy efficient operation of LEDs is made possible by a circuit arrangement, in which two different LED chains can be coupled to a supply source at respectively different points in time.
An aspect of this invention is to save weight for low frequency shields, especially when it comes to large "Zero gauss chambers”, where the lid could be only made from expensive 5 mm NiFe material. With this shape, manufacturers can use much thinner, lighter and cheaper gauges and achieve the same or an even better shielding factor. Almost any kind of magnetic shield which needs a bottom and/or a lid could use this technology. As shields are used in e.g., satellite navigation systems, the smaller weight may have quite a big influence where weight is critical.
By 2050, the global population will reach about 9.6 billion. Food production has to double to feed everyone. Precision agriculture aims to apply the precise and correct amount of inputs like water, fertilizer, etc. at the correct time for yield maximization.
Concerns over pollution require the adoption of energy conservation as well as sustainable generation such as reducing the use of fossil fuels, wide spread use of public transport, more renewable energy production and reducing peak demands with time of use pricing.
The objective of predictive maintenance is to reduce unexpected downtime and increase productivity. To realize this alone would generate around up to 30% over the total maintenance costs. Cyber-physical systems will eventually interfere with physical assets to optimize processes.
Sensors are used in everyday objects and numerous applications of which most people are never aware. Applications include manufacturing, airplanes, cars, medicine, etc.
With the integration of connected sensing systems into energy consuming devices it will become possible to effectively balance power generation and energy usage.
Carbon capture and utilization could help reduce greenhouse gas emissions from coal plants. For example, algal synthesis utilises CO2 as a useful feedstock to grow oil-rich algal biomass for the production of plastics, transport fuel and nutritious animal feed.
Autonomous cars use radar, laser light, GPS, etc. to detect their surroundings. They may also obtain information relating to traffic jams and accidents from other vehicles. Such systems could help avoid most of today’s traffic accidents.
Comment: I think it's pretty good when the LED modules with integrated drivers get smaller and smaller. The life of the LED module should also be improved with this construction method and the space requirement be reduced, in order to be able to use it even in hard to reach places. In addition, the modules can be combined in many ways.
Comment: Well, if I got this right - this idea needs a disc from one side, combined with the rings in between a second disc (probably welded) on the backend. I haven´t seen any similar shield in my career and have to admit that I have seen hundrets of different types including deep-drawn parts and cryogenic shields... I think the biggest benefit could be saving weight for large diameters on one hand - plus to save time during production as the diameter could be specified via standardization. Nevertheless you´d need an experienced team for the welding/stacking and fairly good final heat treatment under hydrogen I expect. Last but not least, this shape is pretty much too complex to just analyse the effect theroratically, so I personally would give a sample a go to see if it works... Curious to see what experts from Amuneal, VAC and Magnetic Shields say..
Comment: As Franz already said, this Patent will become more and more important for LEDs with integrated drivers like this one: http://www.szledcolor.com/download/WS2813%20LED.pdf These WS2812/13 LED chips have low voltage DC drivers and usually have a support Capacitor soldered near the LEDs. This could be something covered by the patent if we see LEDs with integrated AC drivers.
Comment: The Patent is about a LED Module with a kind of solder free contacts to overcome the problem of different thermal expansion and solder cracks thereof. It is proposed to place the LEDs over the conducting tracks with a holding force to ensure an electrical contact. The reliability of such a solution is not proven yet.
Comment: Easy Micro storage converter Circuit with an added storage capacitor that is charged within a predefined current range of the LEDs. and discharged within another cuurent range. As these converter topologies are cheap and easy to set up, the relevance in lighting applications is growing.
Comment: The Patent is about a light bulb having different LED strings for direct and indirect light, so the overall light of that bulb can be shaped in a more convenient manner. The indirect light can also have a different light colour than the direct light to compensate the changes in reflection of different surfaces. This is a good patent for all areas of architectural and art lighting solutions where the light designer wants to have maximum impact on the light emitted.
Comment: Even if claim 1 is lengthy the scope is rather broad. If you want to illuminate different objects with different LED chains having different mean currents and the chains connected to a single power source at different times, then this is your patent.
Comment: It seems that bundles of pipes are combined with disks on the face side in order to get a shielding effect. But the cope of protection is not clear enough to evaluate this utility patent. May be useful to get a low weight shielding in a low frequency environment.
Comment: The patent discloses a LED light structure having a solid-state light radiation source, such as high luminosity LEDs to tackle the problem of electrical insulation, thermal dissipation, mechanical strength and lifetime of the LEDs. Proposed are mechanically strong light structures having a base wall, light radiation source and optical elements presses against the base wall. Also disclosed a housing made of metal material having good thermal dissipation characteristics. The technology may be implemented in LED street lights, solar lights, outdoor lights, facility lights, runway lights etc.
Comment: The invention discloses a lightweight, small and portable LED luminaire that can be used at poorly accessible areas. Existing designs have problems in terms of luminaire size mainly caused due to presence of in-house on chip parallel capacitors. Proposed luminaire has a LED, a rectifier and a driver connected in parallel with a capacitor using a cable, to reduce flickering effect. In the proposed design the capacitor is mounted away from the LED to reduce the size and increase capacitor lifetime. The technology may be implemented in LED spotlights, smart LED luminaires, outdoor LED light etc.
Comment: This invention is related to LED drivers. Traditional techniques to drive a LED circuit, either by converting supply voltage to LED’s forward voltage or use switched regulators. Disclosed are simplified LED driver circuits using a rectifier, energy storage capacitor and a current controller, so that luminaires are robust, efficient and able to operate on high voltages even in presence of power fluctuations. Such circuits are simple and easy to use. The invention may be implemented in LED drivers, LED circuits having multiple LEDs etc.
Comment: I think that the invention is about a reflector in a light fixture. Beside doing its regular job of reflecting, the reflector also provides a mechanical assembly function by pressing the LED and driver circuit against the base wall of the fixture.
Comment: The independent claim is very long. But could read on LED chains in retrofits or other applications when they use two different LED chains. Does anyone know more?
Comment: Here are our pros and cons. Pros: Makes sense if you need a low profile for LED and cannot have a bulky capacitor. Or if the capacitor should not be too near at the heat source (LED). Or if the capacitor should be easy to replace. Cons: Not a cost saving because of extra wiring. Instead of two wires you have several wires.
Comment: Franz is right. This invention can become very valuable as LED drivers become smaller and smaller. Claim 1 requires "one light emitting diode is arranged in a first structural unit ... and one first capacitor is arranged in a second structural unit ... whereas the rectifier and the driver apparatus are arranged in the first structural unit." Today, drivers are bulky and are often in a separate housing from the LED. When drivers become smaller, I am pretty sure that companies will put driver and LED in one housing and put the larger capacitors somewhere else. And this patent has another 15 years before it expires!
Comment: Argh, I do not speak German! But the English claims seem to confirm Mickey's view.
Comment: Looks like a clever and simple circuit arrangement for operating a chain of LED on AC voltage. Instead of using a converter, the invention relies on a rectifier, an energy store and a circuit controller.