Light-emitting diode (LED) lamp box provided with constant-current power supply devices

A technology of LED light box and constant current power supply, which is applied to the components of lighting devices, lighting devices, circuit layout, etc. It can solve the problems of inconsistency in series connection of current limiting resistors, decrease in cost and efficiency, and many constant current units. Complicated wiring, improved efficiency, and reduced quantity

Inactive Publication Date: 2012-10-24
SHANGHAI YINGBEN OPTOELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the different sizes of the light boxes, the length of the light bar powered by constant voltage is fixed, which cannot be adapted to all light boxes, that is, the length of the required light bar is not a multiple of the length of the light of 3 and 6, which makes the wiring of the LED light bar of the light box complicated. , there are many constant current units, or the current limiting resistors connected in series are inconsistent, and the cost and efficiency are reduced

Method used

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  • Light-emitting diode (LED) lamp box provided with constant-current power supply devices
  • Light-emitting diode (LED) lamp box provided with constant-current power supply devices
  • Light-emitting diode (LED) lamp box provided with constant-current power supply devices

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Such as Figure 1 to Figure 3 As shown, the present invention includes a light box 3 and a light bar 1 arranged in the light box 3 . Each wick 2 on the light bar 1 is connected in series, and each light bar 1 is connected in parallel; the light bar 1 is also provided with a constant current power supply device 4 which is respectively connected in series with the wicks 2 on the light bar 1 .

[0015] Such as Figure 4 As shown, the power supply voltage of the constant current power supply device 4 in the present invention passes through the power supply anti-reverse connection device successively through a filter, a transformer, a frequency converter, a rectifier, a voltage detector, and the amplifier is then connected back to the transformer through the controller. The signal after the current detection is sent to the controller, and the voltage output by the ...

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Abstract

The invention relates to an LED lamp box and particularly relates to an LED lamp box provided with constant-current power supply devices. The LED lamp box comprises a lamp box body, lamp bars and constant-current power supply devices, wherein lamp bars are arranged inside the lamp box body. The LED lamp box is characterized in that constant-current power supply devices are arranged inside lamp bars and are in series connection with all lamp wicks on lamp bars, and lamp bars are connected with one another in parallel. Compared with the prior art, the LED lamp box has the advantages that the interior of each of the lamp bars is in a series connection structure, and lamp bars are connected with one another in parallel, so that the problem of complex wiring of the lamp box is solved, the number of constant-current units is reduced to the maximum extent, and the efficiency of the lamp box is improved.

Description

technical field [0001] The invention relates to an LED light box, in particular to an LED light box provided with a constant current power supply device. Background technique [0002] Traditional LED light boxes use constant voltage power supply technology, generally 12V and 24V DC power supply, each string of lamp beads only has 3 and 6 pieces, constant voltage power supply needs to be connected in series with resistors in each circuit, and constant current power supply is also used A constant current unit needs to be connected in series. [0003] Due to the different sizes of the light boxes, the length of the light bar powered by constant voltage is fixed, which cannot be adapted to all light boxes, that is, the length of the required light bar is not a multiple of the length of the light of 3 and 6, which makes the wiring of the LED light bar of the light box complicated. , there are many constant current units, or the series connection of current limiting resistors is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V23/00H05B37/02F21Y101/02
Inventor 高超赵文刚李永奇潘群辉
Owner SHANGHAI YINGBEN OPTOELECTRONICS TECH
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