Xiamen Pvtech Co., Ltd.

Zhirong Lin

Fuxing Lu

Ruicha Lai

A lighting device includes a rectifying circuit, first filtering capacitor, resistor element, transient current suppressing circuit and voltage divider circuit. The two ends of the first filtering capacitor are connected to a first node and second node respectively. The two ends of the resistor element are connected to the second node and third node respectively. The transient current suppressing circuit includes a switch and first adjusting capacitor. The three ends of the switch are connected to a fourth node, second node and third node respectively. The two ends of the first adjusting capacitor are connected to the second node and fourth node respectively. The two ends of the voltage divider circuit are connected to the first node and fourth node respectively. The first node, third node and second node are connected to the first and second output ends of the rectifying circuit and grounding point respectively.

Lighting device having transient current suppressing function

A light-emitting diode (LED) lamp having high color-rendering property includes a lamp housing, a light source board, a plurality of white LEDs and a plurality of purple LEDs. The light source board is disposed in the lamp housing. The white LEDs are disposed on the light source board. The purple LEDs are disposed on the light source board. The wavelength range of the lights emitted by the purple LEDs is within the ultraviolet A (UVA) band.

Light-emitting diode lamp having high color-rendering property and color-rendering property enhancing method thereof

A high-efficiency LED driving circuit includes a rectifying module, a power converting module and a power supply module. The power converting module is connected to the rectifying module and a load, and includes a controller. The load includes a plurality of LEDs. The power input pin of the controller is connected to a connecting point and the connecting point is disposed between two of the LEDs. The quantity of the LEDs can be 2 or more than 2. The circuit design of the driving circuit can effectively reduce the power consumption and heat generation thereof, such that the reliability of the driving circuit can be effectively enhanced.

High-efficiency light-emitting diode driving circuit and high-efficiency light-emitting diode lighting device

A lighting device driving circuit with high operating efficiency is provided, which includes a rectifying module, a constant-voltage module, an input signal collecting module, a constant-voltage signal collecting module and a constant-voltage control module. The rectifying module receives a power signal from a power source input terminal to generate a rectified voltage signal. The constant-voltage module receives the rectified voltage signal to generate a constant-voltage signal. The input signal collecting module receives the power signal or the rectified voltage signal to generate a first feedback signal. The constant-voltage signal collecting module receives the first feedback signal and the constant-voltage signal to generate a second feedback signal. The constant-voltage control module generates a control signal according to the second feedback signal so as to control the constant-voltage module to adjust the constant-voltage signal and drive a load.

Lighting device driving circuit with high operating efficiency and method thereof

A lighting device with improved luminous performance is provided, which includes a first light path, a second light path and a plurality of first light sources and second light sources. The first light path includes a plurality of first bending portions and second bending portions arranged in staggered arrangement. Each first bending portion and each second ending portion protrude from one side and the other side of a first reference line respectively. The first light sources are distributed over the second bending portions. The second light path is connected to the first light path in parallel, and includes a plurality of third bending portions and fourth bending portions arranged in the staggered arrangement. Each third bending portion and each fourth bending portion protrude from one side and the other side of a second reference line respectively. The second light sources are distributed over the third bending portions.

Lighting device with improved luminous performance

A light-emitting diode lamp with afterglow-proof function is provided, which includes a power input terminal, a control circuit, a switching circuit, a rectifying circuit and a driving circuit. The power input terminal includes a first power input terminal connected to a first node and a second power input terminal connected to a second node. The control circuit is connected to the first and second nodes respectively. The switching circuit includes a first connection pin, a second connection pin, a third connection pin and a fourth connection. The first connection pin and the second connection pin are connected to the first and second nodes respectively. The driving circuit is connected to a plurality of light-emitting diodes. One end of the driving circuit is connected to the third connection pin via the rectifying circuit and the other end of the driving circuit is connected to the fourth connection pin.

Light-emitting diode lamp with afterglow-proof function

A LED ceiling lamp is provided. The LED ceiling lamp includes a lamp base including a metal frame with a mountain shaped cross section, the accommodating slot is formed through two ends of the lamp base; a power module configured in the accommodating slot of the lamp base; a plurality of first fixing units fixed at a bottom wall of the accommodating slot of the lamp base at intervals; a movable lamp light detachably assembled into the accommodating slot of the lamp base; and a plurality of second fixing units fixed to the heat dissipation unit at intervals. With the configuration of the first fixing units and the second fixing units, the movable lamp light can be fixed to or detached from the lamp base quickly. As a result, it is much more convenient.

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Fujian, China

Zhirong Lin