Xiamen Pvtech Co., Ltd.

Xiamen Bymea Lighting Co., Ltd.

Longyin Chen

Fuxing Lu

Haibo Hong

Rongtu Liu

Shaolin Lian

A lighting device control circuit includes an input voltage generating circuit and color temperature adjusting circuit. The color temperature adjusting circuit includes an encoder switch and first voltage adjusting element. The encoder switch includes a first main pin, first auxiliary pin, second main pin, second auxiliary pin, main common pin, auxiliary common pin and switch element. The main common pin and the auxiliary common pin are connected to a grounding point. The switch element selectively connects two of the above pins to each other. The positive electrode of a first light source is connected to the grounding point and the negative electrode thereof is connected to the first main pin, first auxiliary pin and second auxiliary pin. The positive electrode of a second light source is connected to the grounding point and the negative electrode thereof is connected to the second main pin via the first voltage adjusting element.

Lighting device control device having color temperature adjusting function

A lighting device having replaceable intelligent sensor includes a filter, a first voltage converter, a DC-to-DC converter, an intelligent sensor, a control circuit, a load and a rectifier. The first voltage converter is connected to the filter. The DC-to-DC converter is connected to the first voltage converter. The intelligent sensor is detachably connected to the DC-to-DC converter. The control circuit is connected to the filter, and includes an optical coupler and a switch connected to each other. The load is connected to the control circuit. The rectifier is connected to the filter and an external power source in order to drive the intelligent sensor and the control circuit. The intelligent sensor generates a first control signal to control the optical coupler to turn on the switch, such that the control circuit generates a driving signal to drive the load.

Lighting device having replaceable intelligent sensor

An ultra-thin downlight with enhanced thermal dissipation performance includes a housing, a light source board and a light cover. The housing includes a first ring portion, a cylindrical portion and a second ring portion connected to each other. The cylindrical portion is disposed between the first ring portion and the second ring portion, such that an accommodating space is formed between the first ring portion, the cylindrical portion and the second ring portion. The light source board is fixed on the inner surface of the second ring portion and disposed in the accommodating space. A portion of the light source board is covered by the second ring portion and the other portion of the light source board is exposed from the second ring portion. The light cover is disposed on the inner surface of the first ring portion.

Ultra-thin downlight with enhanced thermal dissipation performance

An LED drive circuit with leakage protection and ballast includes a first filtering circuit, a rectifying circuit, a power module, a second filtering circuit, a compatibility and leakage protection circuit and a LED load, the input of the first filtering circuit is connected to a power input, the output of the first filtering circuit is connected to the input of the rectifying circuit, the output of the rectifying circuit is connected to the input of the second filtering circuit, the output of the second filtering circuit is connected to the input of the power module, the output of the power module is connected to the LED load, the input of the compatibility and leakage protection circuit is connected to the input of the rectifying circuit and the input of the second filtering circuit, and the output of the compatibility and leakage protection circuit is connected to the rectifying circuit output.

Growing community of inventors

Fujian, China

Longyin Chen