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公开(公告)号：US12101855B2
公开(公告)日：2024-09-24
申请号：US18518691
申请日：2023-11-24
IPC分类号： H05B45/14 , H05B47/155 , H05B47/23 , H05B47/25
CPC分类号： H05B45/14 , H05B47/155 , H05B47/23 , H05B47/25
摘要： Apparatus, methods and systems for providing power to light-emitting diode (“LED”) light sources are provided. The apparatus may include a plurality of power output channels. Each of the power output channels may provide a current to a plurality of LED modules. Each of the LED modules may correspond to one of the power output channels. The apparatus may include a protection circuit. The protection circuit may receive a conditioned voltage. The protection circuit may use the conditioned voltage to feed to the power output channels an output current that, in total, has a power no greater than a predetermined power limit. The apparatus may include a voltage conditioning circuit. The voltage condition circuit may receive line voltage. the voltage condition circuit may condition the line voltage. The voltage conditioning circuit may provide the conditioned voltage to the protection circuit.
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公开(公告)号：US20210029801A1
公开(公告)日：2021-01-28
申请号：US17071946
申请日：2020-10-15
摘要： A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.
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公开(公告)号：US20220361303A1
公开(公告)日：2022-11-10
申请号：US17872257
申请日：2022-07-25
摘要： A lighting device circuit comprising: a reference LED string, a mirror LED string coupled in parallel to the reference LED string, an operational amplifier based current mirror circuit coupled to the reference LED string and to the mirror LED string, and a window comparator circuit that includes only a single input that is coupled to a fault sense node. The fault sense node directly connects to a drain node of a transistor within the operational amplifier based current mirror and a LED within the mirror LED string.
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4.发明授权公开(公告)号：US11076473B2
公开(公告)日：2021-07-27
申请号：US16696356
申请日：2019-11-26
发明人： Marco Pamato , Damiano Sartori , Gernot Unterweger
摘要： A method and an electronic circuit are disclosed. The method includes detecting at least one operating parameter in an electronic circuit that includes a monitored LED string; adjusting a voltage threshold based on the at least one detected operating parameter; detecting a string voltage across the monitored LED string; comparing the string voltage with the voltage threshold; and detecting a defect in the LED string based on the comparing.
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公开(公告)号：US11950332B2
公开(公告)日：2024-04-02
申请号：US18062685
申请日：2022-12-07
发明人： Steven J. Altamura
CPC分类号： H05B39/041 , H01J9/00 , H01K3/00 , H05B47/23
摘要： A resistor bypass circuit for a series lighting circuit includes a plurality of serially connected light sources and a bypass resistor being connected in parallel with at least one of the respective light sources, each respective light source being low wattage and being capable operating on a one hundred percent duty cycle as desired.
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公开(公告)号：US11388790B1
公开(公告)日：2022-07-12
申请号：US17402091
申请日：2021-08-13
摘要： The invention is a self-repairing light bulb and method for same, the self-repairing light bulb comprises a light bulb body forming a hollow interior for containing a set of illumination arrays, one or more light detectors to detect a set minimum level of illumination as issued from an energized illumination array, light analyzers connected to one or more light detectors and configured to activate a programmable electro-mechanical controller when a selected and currently energized illumination array fails to provide the set minimum level of illumination, the programmable electro-mechanical controller configured to energize one illumination array at a time from the set of illumination arrays in a set sequential pattern, further comprising a last illumination array energization warning system that is activated when a last-in-sequence illumination array of the set is energized.
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公开(公告)号：US11324100B2
公开(公告)日：2022-05-03
申请号：US17004633
申请日：2020-08-27
发明人： Kei Ishimaru , Atsushi Yamada
摘要： Provided is a light source apparatus including semiconductor light sources and a current detection resistor connected in series, a power source circuit that allows current to flow thereto, a current detection circuit that detects current flowing to the current detection resistor and outputs a current detection signal, a control circuit that controls the power source circuit such that a voltage of the current detection signal approaches a target value, a bypass circuit connected in parallel to the semiconductor light sources, and including a clamp element having a clamp voltage higher than a maximum voltage during operation of the semiconductor light sources and a bypass resistor connected in series to the clamp element, and allowing current to flow when an open fault occurs in the semiconductor light sources, and detection circuits that respectively detect an open fault in the semiconductor light sources based on an end-to-end voltage of the bypass resistors.
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公开(公告)号：US20210235565A1
公开(公告)日：2021-07-29
申请号：US17224301
申请日：2021-04-07
申请人： HotaluX, Ltd.
发明人： Norimasa MIZOBE
IPC分类号： H05B47/155 , H05B47/18 , H05B47/21 , H05B47/23 , H05B47/10
摘要： A chained flashlight system includes: plural flashlights; plural lighting control devices that control lighting of the plural flashlights, respectively; a communication wire; and a traffic control device. The plural lighting control devices include receiving units, controlling units, activating units, and power supply units, respectively and are coupled to the traffic control device by the communication wire. The traffic control device simultaneously sends an activating signal to the plural lighting control devices via the communication wire. The receiving units receive the activating signal. The controlling units activate the activating units based on a time from reception of the activating signal to activation of the activating units, set for the flashlights, respectively. When the power supply units are turned ON in an activated state of the activating units, respectively, the flashlights are lit by a lighting signal from the traffic control device, respectively.
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公开(公告)号：US11038369B2
公开(公告)日：2021-06-15
申请号：US16751119
申请日：2020-01-23
发明人： Christopher Hariz , Utkarsh Shah
摘要： The subject disclosure relates to power failure simulations, for example to test lighting systems, such as emergency lighting units or lighted signage. In some aspects, a method of the disclosed technology includes steps for receiving an interrupt command, terminating power delivery from a first power supply to a lighting array in response to the interrupt command, and measuring one or more power characteristics of the second power supply. Methods and machine-readable media are also provided.
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公开(公告)号：US11006508B2
公开(公告)日：2021-05-11
申请号：US16793547
申请日：2020-02-18
申请人： HotaluX, Ltd.
发明人： Norimasa Mizobe
IPC分类号： H05B47/20 , H05B47/18 , H05B47/155 , H05B47/21 , H05B47/23
摘要： A chained flashlight system includes: plural flashlights; plural lighting control devices that control lighting of the plural flashlights, respectively; a communication wire; and a traffic control device. The plural lighting control devices include receiving units, controlling units, activating units, and power supply units, respectively and are coupled to the traffic control device by the communication wire. The traffic control device simultaneously sends an activating signal to the plural lighting control devices via the communication wire. The receiving units receive the activating signal. The controlling units activate the activating units based on a time from reception of the activating signal to activation of the activating units, set for the flashlights, respectively. When the power supply units are turned ON in an activated state of the activating units, respectively, the flashlights are lit by a lighting signal from the traffic control device, respectively.
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