Circuit for improving voltage resistance of lamp beads in aluminum substrate

By designing a circuit including a voltage relief resistor, a transient voltage suppression diode and a capacitor in an aluminum substrate, the problem of insufficient voltage withstand the lamp bead under the non-isolated driver is solved, and the effect of improving the voltage withstandability of the lamp bead and reducing the risk of electric shock is achieved.

CN222674536UActive Publication Date: 2025-03-25HENGDIAN GRP TOSPO LIGHTING
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Patent Information

Application Number
CN202421022167.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-11
Publication Date
2025-03-25
Estimated Expiration
2034-05-11

AI Technical Summary

Technical Problem

When non-isolated drivers are used in lamps, the lamp beads in the aluminum substrate are prone to failure, which is difficult to meet safety certification and performance requirements, and there is a hidden danger of electric shock safety.

Method used

A circuit is designed, including the first lamp group LED1 and the second lamp group LED2, and the negative terminal is connected with a voltage relief resistor RX, a transient voltage suppression diode TVS and a capacitor C1 in parallel. Through the combination of these components, the reception voltage of the lamp beads is reduced, excessive voltage is suppressed, and the high voltage leakage time is reduced.

Benefits of technology

It effectively improves the voltage resistance of lamp beads in aluminum substrates, reduces the voltage drop of a single lamp bead, reduces the time of high voltage leakage, meets safety certification and performance requirements, and reduces the safety risk of electric shock.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a circuit for improving the withstand voltage of a lamp bead in an aluminum substrate, which belongs to the technical field of improving the withstand voltage of the lamp bead, and comprises a first lamp group LED1 and a second lamp group LED2, the positive electrode ends of the first lamp group LED1 and the second lamp group LED2 are connected with the positive electrode V + of a power supply, the negative electrode ends of the first lamp group LED1 and the second lamp group LED2 are connected with a switch SW1, the switch SW1 is connected with the negative electrode V-of the power supply, and the switch SW2 is connected with the negative electrode V-of the power supply. And the negative electrode ends of the first lamp group LED1 and the second lamp group LED2 are also connected in parallel with a voltage release resistor RX. According to the utility model, through the arrangement of the resistor RX, when high voltage flows through the lamp, the aim of discharging voltage energy is fulfilled after passing through the aluminum substrate and the lamp bead, so that the receiving voltage of the lamp bead can be reduced, and the voltage endurance capability of the lamp bead is provided.
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