LED lighting circuit and LED lighting fixture having said LED lighting circuit
JP7756835B2Active Publication Date: 2025-10-20SIGNIFY HOLDING BV
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Patent Information
- Application Number
- JP2025505859
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2022-09-26
- Filing Date
- 2023-07-18
- Publication Date
- 2025-10-20
- Estimated Expiration
- 2043-07-18
Abstract
The present invention relates to an LED device including first LED strings D1, ..., D72, each having a first tap 20 between two LEDs in the first LED strings D1, ..., D72, and second LED strings D73, ..., D144, each having a second tap 22 between two LEDs in the second LED strings D73, ..., D144, wherein the first LED string and the second LED string are connected in parallel, and a power supply adapted to receive input power and provide output power to the LED device. a bidirectional conduction device (24) connected between the first tap (20) and the second tap (22) and adapted to be triggered to a conductive state when a potential difference between the first tap (20) and the second tap (22) exceeds a threshold, wherein a current conducted by the bidirectional conduction device (24) is adapted to generate a fault signal at a first detection output (240); and a control circuit (27) connected to the first detection output (240) and adapted to control the power supply device (23) to reduce the output power when the fault signal is received.
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Citation Information
Patent Citations
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