Power supply device of liquid crystal television backlight system
A backlight system and power supply device technology, applied in the field of televisions, can solve the problems of large carbon emissions, unfavorable to energy saving and environmental protection, inconvenience, etc., and achieve the effects of reducing carbon emissions, saving energy, and reducing power consumption
Active Publication Date: 2014-07-16
KONKA GROUP
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Problems solved by technology
The power supply of LCD TV is completely provided by 220 / 110V mains, which has a large amount of carbon emissions, which is not conducive to energy saving and environmental protection
[0004] In summary, it can be seen that the backlight power supply system of the LCD TV in the prior art obviously has inconvenience and defects in actual use, so it is necessary to improve it.
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[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0024] figure 1 The structure of the power supply device of the LCD TV backlight system of the present invention is shown. The power supply device includes a solar panel 10, a solar battery 20, a solar controller 30, a control circuit 40, and the original switching power supply 50 and inverter 60 of the LCD TV. and backlight system 70, where
[0025] The solar panel 10, connected to the solar controller 30, is the core component of the entire device, and is used to convert solar energy into electrical energy, which is processed by the solar controller 30 to obtain direct current, which di...
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The invention discloses a power supply device of a liquid crystal television backlight system. The power supply device comprises a switching power supply and an inverter. The power supply device also comprises a solar panel, a solar storage battery, a solar controller and a control circuit, wherein the solar panel is used for converting solar energy into electrical energy and connected with the solar controller; the solar storage battery is connected with the solar controller; the solar controller converts the electrical energy converted by the solar panel into direct current and then supplies the direct current to the inverter or stores the converted direct current in the solar storage battery, and the discharge of the direct current in the solar storage battery is controlled by the solar controller to supply power to the inverter; and the control circuit is connected with the solar controller, the switching power supply and the inverter respectively, and controls switching of the solar controller or the switching power supply to supply power to the inverter according to the detected output voltage of the solar controller. Therefore, when the voltage output by the solar energy is stable, the whole power consumption of a liquid crystal television can be reduced by about 60 percent through the power supply device.
Description
technical field [0001] The invention relates to the field of televisions, in particular to a power supply device for a backlight system of a liquid crystal television. Background technique [0002] LCD TV backlights, most of which currently use CCFL (Cold Cathode Fluorescent Lamp) backlights. The working voltage of CCFL backlights is between 1000-2000V. Such a high voltage is the 24V voltage output by the switching power supply. , obtained after boosting by the inverter. In the power consumption of the whole LCD TV, the power consumed by the CCFL backlight system accounts for about 60% of the power consumption of the whole machine. [0003] The LCD TV is powered by 220 / 110V AC mains. After the 220 / 110V AC mains is processed by the switching power supply, it outputs multiple low voltages including 24V, of which 24V is dedicated to the inverter. The 24V is boosted to the 1000-2000V high voltage required by the CCFL backlight to drive the CCFL backlight system to work normall...
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IPC IPC(8): H04N5/63G09G3/36H02J7/00
Inventor 张君松
Owner KONKA GROUP